Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 6414 insertions, 0 deletions

diff --git a/src/VBox/VMM/VMMAll/CPUMAllMsrs.cpp b/src/VBox/VMM/VMMAll/CPUMAllMsrs.cpp
new file mode 100644
index 00000000..34bc5d4e
--- /dev/null
+++ b/src/VBox/VMM/VMMAll/CPUMAllMsrs.cpp
@@ -0,0 +1,6414 @@
+/* $Id: CPUMAllMsrs.cpp $ */
+/** @file
+ * CPUM - CPU MSR Registers.
+ */
+
+/*
+ * Copyright (C) 2013-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP LOG_GROUP_CPUM
+#include <VBox/vmm/cpum.h>
+#include <VBox/vmm/apic.h>
+#include <VBox/vmm/hm.h>
+#include <VBox/vmm/hm_vmx.h>
+#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
+# include <VBox/vmm/iem.h>
+#endif
+#include <VBox/vmm/tm.h>
+#include <VBox/vmm/gim.h>
+#include "CPUMInternal.h"
+#include <VBox/vmm/vmcc.h>
+#include <VBox/err.h>
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/**
+ * Validates the CPUMMSRRANGE::offCpumCpu value and declares a local variable
+ * pointing to it.
+ *
+ * ASSUMES sizeof(a_Type) is a power of two and that the member is aligned
+ * correctly.
+ */
+#define CPUM_MSR_ASSERT_CPUMCPU_OFFSET_RETURN(a_pVCpu, a_pRange, a_Type, a_VarName) \
+    AssertMsgReturn(   (a_pRange)->offCpumCpu >= 8 \
+                    && (a_pRange)->offCpumCpu < sizeof(CPUMCPU) \
+                    && !((a_pRange)->offCpumCpu & (RT_MIN(sizeof(a_Type), 8) - 1)) \
+                    , ("offCpumCpu=%#x %s\n", (a_pRange)->offCpumCpu, (a_pRange)->szName), \
+                    VERR_CPUM_MSR_BAD_CPUMCPU_OFFSET); \
+    a_Type *a_VarName = (a_Type *)((uintptr_t)&(a_pVCpu)->cpum.s + (a_pRange)->offCpumCpu)
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+
+/**
+ * Implements reading one or more MSRs.
+ *
+ * @returns VBox status code.
+ * @retval  VINF_SUCCESS on success.
+ * @retval  VINF_CPUM_R3_MSR_READ if the MSR read could not be serviced in the
+ *          current context (raw-mode or ring-0).
+ * @retval  VERR_CPUM_RAISE_GP_0 on failure (invalid MSR).
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ * @param   idMsr       The MSR we're reading.
+ * @param   pRange      The MSR range descriptor.
+ * @param   puValue     Where to return the value.
+ */
+typedef DECLCALLBACK(VBOXSTRICTRC) FNCPUMRDMSR(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue);
+/** Pointer to a RDMSR worker for a specific MSR or range of MSRs.  */
+typedef FNCPUMRDMSR *PFNCPUMRDMSR;
+
+
+/**
+ * Implements writing one or more MSRs.
+ *
+ * @retval  VINF_SUCCESS on success.
+ * @retval  VINF_CPUM_R3_MSR_WRITE if the MSR write could not be serviced in the
+ *          current context (raw-mode or ring-0).
+ * @retval  VERR_CPUM_RAISE_GP_0 on failure.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ * @param   idMsr       The MSR we're writing.
+ * @param   pRange      The MSR range descriptor.
+ * @param   uValue      The value to set, ignored bits masked.
+ * @param   uRawValue   The raw value with the ignored bits not masked.
+ */
+typedef DECLCALLBACK(VBOXSTRICTRC) FNCPUMWRMSR(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue);
+/** Pointer to a WRMSR worker for a specific MSR or range of MSRs.  */
+typedef FNCPUMWRMSR *PFNCPUMWRMSR;
+
+
+
+/*
+ * Generic functions.
+ * Generic functions.
+ * Generic functions.
+ */
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_FixedValue(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr);
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IgnoreWrite(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    Log(("CPUM: Ignoring WRMSR %#x (%s), %#llx\n", idMsr, pRange->szName, uValue));
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_WriteOnly(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(puValue);
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_ReadOnly(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    Assert(pRange->fWrGpMask == UINT64_MAX);
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+
+
+/*
+ * IA32
+ * IA32
+ * IA32
+ */
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32P5McAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0; /** @todo implement machine check injection. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32P5McAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement machine check injection. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32P5McType(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0; /** @todo implement machine check injection. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32P5McType(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement machine check injection. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32TimestampCounter(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = TMCpuTickGet(pVCpu);
+#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
+    *puValue = CPUMApplyNestedGuestTscOffset(pVCpu, *puValue);
+#endif
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32TimestampCounter(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    TMCpuTickSet(pVCpu->CTX_SUFF(pVM), pVCpu, uValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PlatformId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr);
+    uint64_t uValue = pRange->uValue;
+    if (uValue & 0x1f00)
+    {
+        /* Max allowed bus ratio present. */
+        /** @todo Implement scaled BUS frequency. */
+    }
+
+    *puValue = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32ApicBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    return APICGetBaseMsr(pVCpu, puValue);
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32ApicBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return APICSetBaseMsr(pVCpu, uValue);
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32FeatureControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64FeatCtrl;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32FeatureControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32BiosSignId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo fake microcode update. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32BiosSignId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* Normally, zero is written to Ia32BiosSignId before reading it in order
+       to select the signature instead of the BBL_CR_D3 behaviour.  The GP mask
+       of the database entry should take care of most illegal writes for now, so
+       just ignore all writes atm. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32BiosUpdateTrigger(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+
+    /* Microcode updates cannot be loaded in VMX non-root mode. */
+    if (CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.s.Guest))
+        return VINF_SUCCESS;
+
+    /** @todo Fake bios update trigger better.  The value is the address to an
+     *        update package, I think.  We should probably GP if it's invalid. */
+    return VINF_SUCCESS;
+}
+
+
+/**
+ * Get MSR_IA32_SMM_MONITOR_CTL value for IEM and cpumMsrRd_Ia32SmmMonitorCtl.
+ *
+ * @returns The MSR_IA32_SMM_MONITOR_CTL value.
+ * @param   pVCpu           The cross context per CPU structure.
+ */
+VMM_INT_DECL(uint64_t) CPUMGetGuestIa32SmmMonitorCtl(PCVMCPU pVCpu)
+{
+    /* We do not support dual-monitor treatment for SMI and SMM. */
+    /** @todo SMM. */
+    RT_NOREF(pVCpu);
+    return 0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SmmMonitorCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = CPUMGetGuestIa32SmmMonitorCtl(pVCpu);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SmmMonitorCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo SMM. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PmcN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo check CPUID leaf 0ah. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PmcN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo check CPUID leaf 0ah. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MonitorFilterLineSize(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo return 0x1000 if we try emulate mwait 100% correctly. */
+    *puValue = 0x40; /** @todo Change to CPU cache line size. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MonitorFilterLineSize(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo should remember writes, though it's supposedly something only a BIOS
+     * would write so, it's not extremely important. */
+    return VINF_SUCCESS;
+}
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MPerf(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Read MPERF: Adjust against previously written MPERF value.  Is TSC
+     *        what we want? */
+    *puValue = TMCpuTickGet(pVCpu);
+#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
+    *puValue = CPUMApplyNestedGuestTscOffset(pVCpu, *puValue);
+#endif
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MPerf(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Write MPERF: Calc adjustment. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32APerf(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Read APERF: Adjust against previously written MPERF value.  Is TSC
+     *        what we want? */
+    *puValue = TMCpuTickGet(pVCpu);
+#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
+    *puValue = CPUMApplyNestedGuestTscOffset(pVCpu, *puValue);
+#endif
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32APerf(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Write APERF: Calc adjustment. */
+    return VINF_SUCCESS;
+}
+
+
+/**
+ * Get fixed IA32_MTRR_CAP value for NEM and cpumMsrRd_Ia32MtrrCap.
+ *
+ * @returns Fixed IA32_MTRR_CAP value.
+ * @param   pVCpu           The cross context per CPU structure.
+ */
+VMM_INT_DECL(uint64_t) CPUMGetGuestIa32MtrrCap(PCVMCPU pVCpu)
+{
+    RT_NOREF_PV(pVCpu);
+
+    /* This is currently a bit weird. :-) */
+    uint8_t const   cVariableRangeRegs              = 0;
+    bool const      fSystemManagementRangeRegisters = false;
+    bool const      fFixedRangeRegisters            = false;
+    bool const      fWriteCombiningType             = false;
+    return cVariableRangeRegs
+         | (fFixedRangeRegisters            ? RT_BIT_64(8)  : 0)
+         | (fWriteCombiningType             ? RT_BIT_64(10) : 0)
+         | (fSystemManagementRangeRegisters ? RT_BIT_64(11) : 0);
+}
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MtrrCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = CPUMGetGuestIa32MtrrCap(pVCpu);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MtrrPhysBaseN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Implement variable MTRR storage. */
+    Assert(pRange->uValue == (idMsr - 0x200) / 2);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MtrrPhysBaseN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    /*
+     * Validate the value.
+     */
+    Assert(pRange->uValue == (idMsr - 0x200) / 2);
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(uRawValue); RT_NOREF_PV(pRange);
+
+    uint8_t uType = uValue & 0xff;
+    if ((uType >= 7) || (uType == 2) || (uType == 3))
+    {
+        Log(("CPUM: Invalid type set writing MTRR PhysBase MSR %#x: %#llx (%#llx)\n", idMsr, uValue, uType));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    uint64_t fInvPhysMask = ~(RT_BIT_64(pVCpu->CTX_SUFF(pVM)->cpum.s.GuestFeatures.cMaxPhysAddrWidth) - 1U);
+    if (fInvPhysMask & uValue)
+    {
+        Log(("CPUM: Invalid physical address bits set writing MTRR PhysBase MSR %#x: %#llx (%#llx)\n",
+             idMsr, uValue, uValue & fInvPhysMask));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    /*
+     * Store it.
+     */
+    /** @todo Implement variable MTRR storage. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MtrrPhysMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Implement variable MTRR storage. */
+    Assert(pRange->uValue == (idMsr - 0x200) / 2);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MtrrPhysMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    /*
+     * Validate the value.
+     */
+    Assert(pRange->uValue == (idMsr - 0x200) / 2);
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(uRawValue); RT_NOREF_PV(pRange);
+
+    uint64_t fInvPhysMask = ~(RT_BIT_64(pVCpu->CTX_SUFF(pVM)->cpum.s.GuestFeatures.cMaxPhysAddrWidth) - 1U);
+    if (fInvPhysMask & uValue)
+    {
+        Log(("CPUM: Invalid physical address bits set writing MTRR PhysMask MSR %#x: %#llx (%#llx)\n",
+             idMsr, uValue, uValue & fInvPhysMask));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    /*
+     * Store it.
+     */
+    /** @todo Implement variable MTRR storage. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MtrrFixed(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    CPUM_MSR_ASSERT_CPUMCPU_OFFSET_RETURN(pVCpu, pRange, uint64_t, puFixedMtrr);
+    *puValue = *puFixedMtrr;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MtrrFixed(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    CPUM_MSR_ASSERT_CPUMCPU_OFFSET_RETURN(pVCpu, pRange, uint64_t, puFixedMtrr);
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(uRawValue);
+
+    for (uint32_t cShift = 0; cShift < 63; cShift += 8)
+    {
+        uint8_t uType = (uint8_t)(uValue >> cShift);
+        if ((uType >= 7) || (uType == 2) || (uType == 3))
+        {
+            Log(("CPUM: Invalid MTRR type at %u:%u in fixed range (%#x/%s): %#llx (%#llx)\n",
+                 cShift + 7, cShift, idMsr, pRange->szName, uValue, uType));
+            return VERR_CPUM_RAISE_GP_0;
+        }
+    }
+    *puFixedMtrr = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MtrrDefType(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.GuestMsrs.msr.MtrrDefType;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MtrrDefType(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+
+    uint8_t uType = uValue & 0xff;
+    if ((uType >= 7) || (uType == 2) || (uType == 3))
+    {
+        Log(("CPUM: Invalid MTRR default type value on %s: %#llx (%#llx)\n", pRange->szName, uValue, uType));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    pVCpu->cpum.s.GuestMsrs.msr.MtrrDefType = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32Pat(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrPAT;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32Pat(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    if (CPUMIsPatMsrValid(uValue))
+    {
+        pVCpu->cpum.s.Guest.msrPAT = uValue;
+        return VINF_SUCCESS;
+    }
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SysEnterCs(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.SysEnter.cs;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SysEnterCs(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+
+    /* Note! We used to mask this by 0xffff, but turns out real HW doesn't and
+             there are generally 32-bit working bits backing this register. */
+    pVCpu->cpum.s.Guest.SysEnter.cs = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SysEnterEsp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.SysEnter.esp;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SysEnterEsp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    if (X86_IS_CANONICAL(uValue))
+    {
+        pVCpu->cpum.s.Guest.SysEnter.esp = uValue;
+        return VINF_SUCCESS;
+    }
+    Log(("CPUM: IA32_SYSENTER_ESP not canonical! %#llx\n", uValue));
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SysEnterEip(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.SysEnter.eip;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SysEnterEip(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    if (X86_IS_CANONICAL(uValue))
+    {
+        pVCpu->cpum.s.Guest.SysEnter.eip = uValue;
+        return VINF_SUCCESS;
+    }
+    LogRel(("CPUM: IA32_SYSENTER_EIP not canonical! %#llx\n", uValue));
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32McgCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+#if 0 /** @todo implement machine checks. */
+    *puValue = pRange->uValue & (RT_BIT_64(8) | 0);
+#else
+    *puValue = 0;
+#endif
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32McgStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement machine checks. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32McgStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement machine checks. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32McgCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement machine checks. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32McgCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement machine checks. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32DebugCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_DEBUGCTL. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32DebugCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_DEBUGCTL. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SmrrPhysBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement intel SMM. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SmrrPhysBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement intel SMM. */
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SmrrPhysMask(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement intel SMM. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SmrrPhysMask(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement intel SMM. */
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PlatformDcaCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement intel direct cache access (DCA)?? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PlatformDcaCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement intel direct cache access (DCA)?? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32CpuDcaCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement intel direct cache access (DCA)?? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32Dca0Cap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement intel direct cache access (DCA)?? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32Dca0Cap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement intel direct cache access (DCA)?? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfEvtSelN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_PERFEVTSEL0+. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfEvtSelN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_PERFEVTSEL0+. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    uint64_t uValue = pRange->uValue;
+
+    /* Always provide the max bus ratio for now.  XNU expects it. */
+    uValue &= ~((UINT64_C(0x1f) << 40) | RT_BIT_64(46));
+
+    PVMCC    pVM            = pVCpu->CTX_SUFF(pVM);
+    uint64_t uScalableBusHz = CPUMGetGuestScalableBusFrequency(pVM);
+    uint64_t uTscHz         = TMCpuTicksPerSecond(pVM);
+    uint8_t  uTscRatio      = (uint8_t)((uTscHz + uScalableBusHz / 2) / uScalableBusHz);
+    if (uTscRatio > 0x1f)
+        uTscRatio = 0x1f;
+    uValue |= (uint64_t)uTscRatio << 40;
+
+    *puValue = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* Pentium4 allows writing, but all bits are ignored. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_PERFCTL. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_PERFCTL. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32FixedCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_FIXED_CTRn (fixed performance counters). */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32FixedCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_FIXED_CTRn (fixed performance counters). */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfCapabilities(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfCapabilities(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32FixedCtrCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32FixedCtrCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfGlobalStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfGlobalStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfGlobalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfGlobalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PerfGlobalOvfCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PerfGlobalOvfCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32PebsEnable(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PebsEnable(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32ClockModulation(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_CLOCK_MODULATION. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32ClockModulation(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_CLOCK_MODULATION. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32ThermInterrupt(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_THERM_INTERRUPT. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32ThermInterrupt(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_THERM_STATUS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32ThermStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_THERM_STATUS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32ThermStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_THERM_INTERRUPT. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32Therm2Ctl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_THERM2_CTL. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32Therm2Ctl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement IA32_THERM2_CTL. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32MiscEnable(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.GuestMsrs.msr.MiscEnable;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32MiscEnable(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+#ifdef LOG_ENABLED
+    uint64_t const uOld = pVCpu->cpum.s.GuestMsrs.msr.MiscEnable;
+#endif
+
+    /* Unsupported bits are generally ignored and stripped by the MSR range
+       entry that got us here. So, we just need to preserve fixed bits. */
+    pVCpu->cpum.s.GuestMsrs.msr.MiscEnable = uValue
+                                           | MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL
+                                           | MSR_IA32_MISC_ENABLE_BTS_UNAVAIL;
+
+    Log(("CPUM: IA32_MISC_ENABLE; old=%#llx written=%#llx => %#llx\n",
+         uOld, uValue,  pVCpu->cpum.s.GuestMsrs.msr.MiscEnable));
+
+    /** @todo Wire IA32_MISC_ENABLE bit 22 to our NT 4 CPUID trick. */
+    /** @todo Wire up MSR_IA32_MISC_ENABLE_XD_DISABLE. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32McCtlStatusAddrMiscN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(pRange);
+
+    /** @todo Implement machine check exception injection. */
+    switch (idMsr & 3)
+    {
+        case 0:
+        case 1:
+            *puValue = 0;
+            break;
+
+        /* The ADDR and MISC registers aren't accessible since the
+           corresponding STATUS bits are zero. */
+        case 2:
+            Log(("CPUM: Reading IA32_MCi_ADDR %#x -> #GP\n", idMsr));
+            return VERR_CPUM_RAISE_GP_0;
+        case 3:
+            Log(("CPUM: Reading IA32_MCi_MISC %#x -> #GP\n", idMsr));
+            return VERR_CPUM_RAISE_GP_0;
+    }
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32McCtlStatusAddrMiscN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    switch (idMsr & 3)
+    {
+        case 0:
+            /* Ignore writes to the CTL register. */
+            break;
+
+        case 1:
+            /* According to specs, the STATUS register can only be written to
+               with the value 0.  VBoxCpuReport thinks different for a
+               Pentium M Dothan, but implementing according to specs now. */
+            if (uValue != 0)
+            {
+                Log(("CPUM: Writing non-zero value (%#llx) to IA32_MCi_STATUS %#x -> #GP\n", uValue, idMsr));
+                return VERR_CPUM_RAISE_GP_0;
+            }
+            break;
+
+        /* Specs states that ADDR and MISC can be cleared by writing zeros.
+           Writing 1s will GP.  Need to figure out how this relates to the
+           ADDRV and MISCV status flags.  If writing is independent of those
+           bits, we need to know whether the CPU really implements them since
+           that is exposed by writing 0 to them.
+           Implementing the solution with the fewer GPs for now. */
+        case 2:
+            if (uValue != 0)
+            {
+                Log(("CPUM: Writing non-zero value (%#llx) to IA32_MCi_ADDR %#x -> #GP\n", uValue, idMsr));
+                return VERR_CPUM_RAISE_GP_0;
+            }
+            break;
+        case 3:
+            if (uValue != 0)
+            {
+                Log(("CPUM: Writing non-zero value (%#llx) to IA32_MCi_MISC %#x -> #GP\n", uValue, idMsr));
+                return VERR_CPUM_RAISE_GP_0;
+            }
+            break;
+    }
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32McNCtl2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Implement machine check exception injection. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32McNCtl2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Implement machine check exception injection. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32DsArea(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement IA32_DS_AREA. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32DsArea(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32TscDeadline(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement TSC deadline timer. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32TscDeadline(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement TSC deadline timer. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32X2ApicN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pRange);
+#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
+    if (   CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.s.Guest)
+        && CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.s.Guest, VMX_PROC_CTLS2_VIRT_X2APIC_MODE))
+    {
+        VBOXSTRICTRC rcStrict = IEMExecVmxVirtApicAccessMsr(pVCpu, idMsr, puValue, false /* fWrite */);
+        if (rcStrict == VINF_VMX_MODIFIES_BEHAVIOR)
+            return VINF_SUCCESS;
+        if (rcStrict == VERR_OUT_OF_RANGE)
+            return VERR_CPUM_RAISE_GP_0;
+        Assert(rcStrict == VINF_VMX_INTERCEPT_NOT_ACTIVE);
+    }
+#endif
+    return APICReadMsr(pVCpu, idMsr, puValue);
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32X2ApicN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
+    if (   CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.s.Guest)
+        && CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.s.Guest, VMX_PROC_CTLS2_VIRT_X2APIC_MODE))
+    {
+        VBOXSTRICTRC rcStrict = IEMExecVmxVirtApicAccessMsr(pVCpu, idMsr, &uValue, true /* fWrite */);
+        if (rcStrict == VINF_VMX_MODIFIES_BEHAVIOR)
+            return VINF_SUCCESS;
+        if (rcStrict == VERR_OUT_OF_RANGE)
+            return VERR_CPUM_RAISE_GP_0;
+        Assert(rcStrict == VINF_VMX_INTERCEPT_NOT_ACTIVE);
+    }
+#endif
+    return APICWriteMsr(pVCpu, idMsr, uValue);
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32DebugInterface(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo IA32_DEBUG_INTERFACE (no docs)  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32DebugInterface(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo IA32_DEBUG_INTERFACE (no docs)  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxBasic(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64Basic;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxPinbasedCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.PinCtls.u;
+    return VINF_SUCCESS;
+}
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxProcbasedCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.ProcCtls.u;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxExitCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.ExitCtls.u;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxEntryCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.EntryCtls.u;
+    return VINF_SUCCESS;
+}
+
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxMisc(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64Misc;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxCr0Fixed0(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64Cr0Fixed0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxCr0Fixed1(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64Cr0Fixed1;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxCr4Fixed0(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64Cr4Fixed0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxCr4Fixed1(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64Cr4Fixed1;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxVmcsEnum(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64VmcsEnum;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxProcBasedCtls2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.ProcCtls2.u;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxEptVpidCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64EptVpidCaps;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxTruePinbasedCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxTrueProcbasedCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxTrueExitCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxTrueEntryCtls(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32VmxVmFunc(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.vmx.Msrs.u64VmFunc;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32SpecCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.GuestMsrs.msr.SpecCtrl;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32SpecCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+
+    /* NB: The STIBP bit can be set even when IBRS is present, regardless of whether STIBP is actually implemented. */
+    if (uValue & ~(MSR_IA32_SPEC_CTRL_F_IBRS | MSR_IA32_SPEC_CTRL_F_STIBP))
+    {
+        Log(("CPUM: Invalid IA32_SPEC_CTRL bits (trying to write %#llx)\n", uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    pVCpu->cpum.s.GuestMsrs.msr.SpecCtrl = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32PredCmd(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Ia32ArchCapabilities(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.GuestMsrs.msr.ArchCaps;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Ia32FlushCmd(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    if ((uValue & ~MSR_IA32_FLUSH_CMD_F_L1D) == 0)
+        return VINF_SUCCESS;
+    Log(("CPUM: Invalid MSR_IA32_FLUSH_CMD_ bits (trying to write %#llx)\n", uValue));
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+
+/*
+ * AMD64
+ * AMD64
+ * AMD64
+ */
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64Efer(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrEFER;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64Efer(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    uint64_t uValidatedEfer;
+    uint64_t const uOldEfer = pVCpu->cpum.s.Guest.msrEFER;
+    int rc = CPUMIsGuestEferMsrWriteValid(pVCpu->CTX_SUFF(pVM), pVCpu->cpum.s.Guest.cr0, uOldEfer, uValue, &uValidatedEfer);
+    if (RT_FAILURE(rc))
+        return VERR_CPUM_RAISE_GP_0;
+
+    CPUMSetGuestEferMsrNoChecks(pVCpu, uOldEfer, uValidatedEfer);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64SyscallTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrSTAR;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64SyscallTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    pVCpu->cpum.s.Guest.msrSTAR = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64LongSyscallTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrLSTAR;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64LongSyscallTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    pVCpu->cpum.s.Guest.msrLSTAR = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64CompSyscallTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrCSTAR;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64CompSyscallTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    pVCpu->cpum.s.Guest.msrCSTAR = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64SyscallFlagMask(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrSFMASK;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64SyscallFlagMask(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    pVCpu->cpum.s.Guest.msrSFMASK = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64FsBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.fs.u64Base;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64FsBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    pVCpu->cpum.s.Guest.fs.u64Base = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64GsBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.gs.u64Base;
+    return VINF_SUCCESS;
+}
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64GsBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    pVCpu->cpum.s.Guest.gs.u64Base = uValue;
+    return VINF_SUCCESS;
+}
+
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64KernelGsBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.msrKERNELGSBASE;
+    return VINF_SUCCESS;
+}
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64KernelGsBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    pVCpu->cpum.s.Guest.msrKERNELGSBASE = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Amd64TscAux(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.GuestMsrs.msr.TscAux;
+    return VINF_SUCCESS;
+}
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Amd64TscAux(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    pVCpu->cpum.s.GuestMsrs.msr.TscAux = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/*
+ * Intel specific
+ * Intel specific
+ * Intel specific
+ */
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelEblCrPowerOn(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo recalc clock frequency ratio? */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelEblCrPowerOn(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Write EBL_CR_POWERON: Remember written bits. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7CoreThreadCount(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+
+    /* Note! According to cpuid_set_info in XNU (10.7.0), Westmere CPU only
+             have a 4-bit core count. */
+    uint16_t cCores   = pVCpu->CTX_SUFF(pVM)->cCpus;
+    uint16_t cThreads = cCores; /** @todo hyper-threading. */
+    *puValue = RT_MAKE_U32(cThreads, cCores);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelP4EbcHardPowerOn(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo P4 hard power on config */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelP4EbcHardPowerOn(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo P4 hard power on config */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelP4EbcSoftPowerOn(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo P4 soft power on config  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelP4EbcSoftPowerOn(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo P4 soft power on config */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelP4EbcFrequencyId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+
+    uint64_t uValue;
+    PVMCC    pVM            = pVCpu->CTX_SUFF(pVM);
+    uint64_t uScalableBusHz = CPUMGetGuestScalableBusFrequency(pVM);
+    if (pVM->cpum.s.GuestFeatures.uModel >= 2)
+    {
+        if (uScalableBusHz <= CPUM_SBUSFREQ_100MHZ && pVM->cpum.s.GuestFeatures.uModel <= 2)
+        {
+            uScalableBusHz = CPUM_SBUSFREQ_100MHZ;
+            uValue = 0;
+        }
+        else if (uScalableBusHz <= CPUM_SBUSFREQ_133MHZ)
+        {
+            uScalableBusHz = CPUM_SBUSFREQ_133MHZ;
+            uValue = 1;
+        }
+        else if (uScalableBusHz <= CPUM_SBUSFREQ_167MHZ)
+        {
+            uScalableBusHz = CPUM_SBUSFREQ_167MHZ;
+            uValue = 3;
+        }
+        else if (uScalableBusHz <= CPUM_SBUSFREQ_200MHZ)
+        {
+            uScalableBusHz = CPUM_SBUSFREQ_200MHZ;
+            uValue = 2;
+        }
+        else if (uScalableBusHz <= CPUM_SBUSFREQ_267MHZ && pVM->cpum.s.GuestFeatures.uModel > 2)
+        {
+            uScalableBusHz = CPUM_SBUSFREQ_267MHZ;
+            uValue = 0;
+        }
+        else
+        {
+            uScalableBusHz = CPUM_SBUSFREQ_333MHZ;
+            uValue = 6;
+        }
+        uValue <<= 16;
+
+        uint64_t uTscHz    = TMCpuTicksPerSecond(pVM);
+        uint8_t  uTscRatio = (uint8_t)((uTscHz + uScalableBusHz / 2) / uScalableBusHz);
+        uValue |= (uint32_t)uTscRatio << 24;
+
+        uValue |= pRange->uValue & ~UINT64_C(0xff0f0000);
+    }
+    else
+    {
+        /* Probably more stuff here, but intel doesn't want to tell us. */
+        uValue = pRange->uValue;
+        uValue &= ~(RT_BIT_64(21) | RT_BIT_64(22) | RT_BIT_64(23)); /* 100 MHz is only documented value */
+    }
+
+    *puValue = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelP4EbcFrequencyId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo P4 bus frequency config  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelP6FsbFrequency(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+
+    /* Convert the scalable bus frequency to the encoding in the intel manual (for core+). */
+    uint64_t uScalableBusHz = CPUMGetGuestScalableBusFrequency(pVCpu->CTX_SUFF(pVM));
+    if (uScalableBusHz <= CPUM_SBUSFREQ_100MHZ)
+        *puValue = 5;
+    else if (uScalableBusHz <= CPUM_SBUSFREQ_133MHZ)
+        *puValue = 1;
+    else if (uScalableBusHz <= CPUM_SBUSFREQ_167MHZ)
+        *puValue = 3;
+    else if (uScalableBusHz <= CPUM_SBUSFREQ_200MHZ)
+        *puValue = 2;
+    else if (uScalableBusHz <= CPUM_SBUSFREQ_267MHZ)
+        *puValue = 0;
+    else if (uScalableBusHz <= CPUM_SBUSFREQ_333MHZ)
+        *puValue = 4;
+    else /*if (uScalableBusHz <= CPUM_SBUSFREQ_400MHZ)*/
+        *puValue = 6;
+
+    *puValue |= pRange->uValue & ~UINT64_C(0x7);
+
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelPlatformInfo(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+
+    /* Just indicate a fixed TSC, no turbo boost, no programmable anything. */
+    PVMCC    pVM            = pVCpu->CTX_SUFF(pVM);
+    uint64_t uScalableBusHz = CPUMGetGuestScalableBusFrequency(pVM);
+    uint64_t uTscHz         = TMCpuTicksPerSecond(pVM);
+    uint8_t  uTscRatio      = (uint8_t)((uTscHz + uScalableBusHz / 2) / uScalableBusHz);
+    uint64_t uValue         = ((uint32_t)uTscRatio << 8)   /* TSC invariant frequency. */
+                            | ((uint64_t)uTscRatio << 40); /* The max turbo frequency. */
+
+    /* Ivy bridge has a minimum operating ratio as well. */
+    if (true) /** @todo detect sandy bridge. */
+        uValue |= (uint64_t)uTscRatio << 48;
+
+    *puValue = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelFlexRatio(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+
+    uint64_t uValue = pRange->uValue & ~UINT64_C(0x1ff00);
+
+    PVMCC    pVM            = pVCpu->CTX_SUFF(pVM);
+    uint64_t uScalableBusHz = CPUMGetGuestScalableBusFrequency(pVM);
+    uint64_t uTscHz         = TMCpuTicksPerSecond(pVM);
+    uint8_t  uTscRatio      = (uint8_t)((uTscHz + uScalableBusHz / 2) / uScalableBusHz);
+    uValue |= (uint32_t)uTscRatio << 8;
+
+    *puValue = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelFlexRatio(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement writing MSR_FLEX_RATIO. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelPkgCStConfigControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.GuestMsrs.msr.PkgCStateCfgCtrl;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelPkgCStConfigControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+
+    if (pVCpu->cpum.s.GuestMsrs.msr.PkgCStateCfgCtrl & RT_BIT_64(15))
+    {
+        Log(("CPUM: WRMSR %#x (%s), %#llx: Write protected -> #GP\n", idMsr, pRange->szName, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+#if 0 /** @todo check what real (old) hardware does. */
+    if ((uValue & 7) >= 5)
+    {
+        Log(("CPUM: WRMSR %#x (%s), %#llx: Invalid limit (%d) -> #GP\n", idMsr, pRange->szName, uValue, (uint32_t)(uValue & 7)));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+#endif
+    pVCpu->cpum.s.GuestMsrs.msr.PkgCStateCfgCtrl = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelPmgIoCaptureBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement I/O mwait wakeup. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelPmgIoCaptureBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement I/O mwait wakeup. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelLastBranchFromToN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last branch records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelLastBranchFromToN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement last branch records. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelLastBranchFromN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last branch records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelLastBranchFromN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    /** @todo implement last branch records. */
+    /** @todo Probing indicates that bit 63 is settable on SandyBridge, at least
+     *        if the rest of the bits are zero.  Automatic sign extending?
+     *        Investigate! */
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelLastBranchToN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last branch records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelLastBranchToN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement last branch records. */
+    /** @todo Probing indicates that bit 63 is settable on SandyBridge, at least
+     *        if the rest of the bits are zero.  Automatic sign extending?
+     *        Investigate! */
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelLastBranchTos(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last branch records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelLastBranchTos(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement last branch records. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelBblCrCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelBblCrCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelBblCrCtl3(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelBblCrCtl3(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7TemperatureTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7TemperatureTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7MsrOffCoreResponseN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo machine check. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7MsrOffCoreResponseN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo machine check. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7MiscPwrMgmt(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7MiscPwrMgmt(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelP6CrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr);
+    int rc = CPUMGetGuestCRx(pVCpu, pRange->uValue, puValue);
+    AssertRC(rc);
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelP6CrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* This CRx interface differs from the MOV CRx, GReg interface in that
+       #GP(0) isn't raised if unsupported bits are written to.  Instead they
+       are simply ignored and masked off. (Pentium M Dothan)  */
+    /** @todo Implement MSR_P6_CRx writing.  Too much effort for very little, if
+     *        any, gain. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCpuId1FeatureMaskEcdx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement CPUID masking.  */
+    *puValue = UINT64_MAX;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCpuId1FeatureMaskEcdx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement CPUID masking.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCpuId1FeatureMaskEax(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement CPUID masking.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCpuId1FeatureMaskEax(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement CPUID masking.  */
+    return VINF_SUCCESS;
+}
+
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCpuId80000001FeatureMaskEcdx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement CPUID masking.  */
+    *puValue = UINT64_MAX;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCpuId80000001FeatureMaskEcdx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement CPUID masking.  */
+    return VINF_SUCCESS;
+}
+
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyAesNiCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement AES-NI.  */
+    *puValue = 3;  /* Bit 0 is lock bit, bit 1 disables AES-NI. That's what they say. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyAesNiCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement AES-NI.  */
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7TurboRatioLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement intel C states.  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7TurboRatioLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement intel C states.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7LbrSelect(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last-branch-records.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7LbrSelect(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement last-branch-records.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyErrorControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement memory error injection (MSR_ERROR_CONTROL).  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyErrorControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement memory error injection (MSR_ERROR_CONTROL).  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7VirtualLegacyWireCap(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement memory VLW?  */
+    *puValue = pRange->uValue;
+    /* Note: A20M is known to be bit 1 as this was disclosed in spec update
+       AAJ49/AAK51/????, which documents the inversion of this bit.  The
+       Sandy bridge CPU here has value 0x74, so it probably doesn't have a BIOS
+       that correct things.  Some guesses at the other bits:
+                 bit 2 = INTR
+                 bit 4 = SMI
+                 bit 5 = INIT
+                 bit 6 = NMI */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7PowerCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7PowerCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel power management  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyPebsNumAlt(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel performance counters.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyPebsNumAlt(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel performance counters.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7PebsLdLat(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel performance counters.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7PebsLdLat(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel performance counters.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7PkgCnResidencyN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7CoreCnResidencyN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyVrCurrentConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Figure out what MSR_VR_CURRENT_CONFIG & MSR_VR_MISC_CONFIG are.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyVrCurrentConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Figure out what MSR_VR_CURRENT_CONFIG & MSR_VR_MISC_CONFIG are.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyVrMiscConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Figure out what MSR_VR_CURRENT_CONFIG & MSR_VR_MISC_CONFIG are.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyVrMiscConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Figure out what MSR_VR_CURRENT_CONFIG & MSR_VR_MISC_CONFIG are.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyRaplPowerUnit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyRaplPowerUnit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* Note! This is documented as read only and except for a Silvermont sample has
+             always been classified as read only.  This is just here to make it compile. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyPkgCnIrtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyPkgCnIrtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel power management.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SandyPkgC2Residency(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7SandyPkgC2Residency(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* Note! This is documented as read only and except for a Silvermont sample has
+             always been classified as read only.  This is just here to make it compile. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPkgPowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7RaplPkgPowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel RAPL.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPkgEnergyStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPkgPerfStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPkgPowerInfo(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplDramPowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7RaplDramPowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel RAPL.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplDramEnergyStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplDramPerfStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplDramPowerInfo(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp0PowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7RaplPp0PowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel RAPL.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp0EnergyStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp0Policy(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7RaplPp0Policy(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel RAPL.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp0PerfStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp1PowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7RaplPp1PowerLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel RAPL.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp1EnergyStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7RaplPp1Policy(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel RAPL.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7RaplPp1Policy(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel RAPL.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7IvyConfigTdpNominal(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7IvyConfigTdpLevel1(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7IvyConfigTdpLevel2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7IvyConfigTdpControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7IvyConfigTdpControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel power management.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7IvyTurboActivationRatio(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo intel power management.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7IvyTurboActivationRatio(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo intel power management.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncPerfGlobalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncPerfGlobalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncPerfGlobalStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncPerfGlobalStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncPerfGlobalOvfCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncPerfGlobalOvfCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncPerfFixedCtrCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncPerfFixedCtrCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncPerfFixedCtr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncPerfFixedCtr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncCBoxConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncArbPerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncArbPerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7UncArbPerfEvtSelN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo uncore msrs.  */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelI7UncArbPerfEvtSelN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo uncore msrs.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelI7SmiCount(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+
+    /*
+     * 31:0 is SMI count (read only), 63:32 reserved.
+     * Since we don't do SMI, the count is always zero.
+     */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCore2EmttmCrTablesN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement enhanced multi thread termal monitoring? */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCore2EmttmCrTablesN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement enhanced multi thread termal monitoring? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCore2SmmCStMiscInfo(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo SMM & C-states? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCore2SmmCStMiscInfo(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo SMM & C-states? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCore1ExtConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Core1&2 EXT_CONFIG (whatever that is)? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCore1ExtConfig(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Core1&2 EXT_CONFIG (whatever that is)? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCore1DtsCalControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Core1&2(?) DTS_CAL_CTRL (whatever that is)? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCore1DtsCalControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Core1&2(?) DTS_CAL_CTRL (whatever that is)? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelCore2PeciControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Core2+ platform environment control interface control register? */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_IntelCore2PeciControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Core2+ platform environment control interface control register? */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_IntelAtSilvCoreC1Recidency(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/*
+ * Multiple vendor P6 MSRs.
+ * Multiple vendor P6 MSRs.
+ * Multiple vendor P6 MSRs.
+ *
+ * These MSRs were introduced with the P6 but not elevated to architectural
+ * MSRs, despite other vendors implementing them.
+ */
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_P6LastBranchFromIp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /* AMD seems to just record RIP, while intel claims to record RIP+CS.BASE
+       if I read the docs correctly, thus the need for separate functions. */
+    /** @todo implement last branch records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_P6LastBranchToIp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last branch records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_P6LastIntFromIp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last exception records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_P6LastIntFromIp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement last exception records. */
+    /* Note! On many CPUs, the high bit of the 0x000001dd register is always writable, even when the result is
+             a non-cannonical address. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_P6LastIntToIp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo implement last exception records. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_P6LastIntToIp(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo implement last exception records. */
+    return VINF_SUCCESS;
+}
+
+
+
+/*
+ * AMD specific
+ * AMD specific
+ * AMD specific
+ */
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hTscRate(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Implement TscRateMsr */
+    *puValue = RT_MAKE_U64(0, 1); /* 1.0 = reset value. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hTscRate(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Implement TscRateMsr */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hLwpCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Implement AMD LWP? (Instructions: LWPINS, LWPVAL, LLWPCB, SLWPCB) */
+    /* Note: Only listes in BKDG for Family 15H. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hLwpCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Implement AMD LWP? (Instructions: LWPINS, LWPVAL, LLWPCB, SLWPCB) */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hLwpCbAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Implement AMD LWP? (Instructions: LWPINS, LWPVAL, LLWPCB, SLWPCB) */
+    /* Note: Only listes in BKDG for Family 15H. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hLwpCbAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Implement AMD LWP? (Instructions: LWPINS, LWPVAL, LLWPCB, SLWPCB) */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hMc4MiscN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo machine check. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hMc4MiscN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo machine check. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8PerfCtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD performance events. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8PerfCtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD performance events. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8PerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD performance events. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8PerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD performance events. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SysCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SYS_CFG */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SysCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SYS_CFG */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8HwCr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD HW_CFG */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8HwCr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD HW_CFG */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8IorrBaseN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IorrMask/IorrBase */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8IorrBaseN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IorrMask/IorrBase */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8IorrMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IorrMask/IorrBase */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8IorrMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IorrMask/IorrBase */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8TopOfMemN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = 0;
+    /** @todo return 4GB - RamHoleSize here for TOPMEM. Figure out what to return
+     *        for TOPMEM2. */
+    //if (pRange->uValue == 0)
+    //    *puValue = _4G - RamHoleSize;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8TopOfMemN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD TOPMEM and TOPMEM2/TOM2. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8NbCfg1(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD NB_CFG1 */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8NbCfg1(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD NB_CFG1 */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8McXcptRedir(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo machine check. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8McXcptRedir(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo machine check. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8CpuNameN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr);
+    PCPUMCPUIDLEAF pLeaf = cpumCpuIdGetLeaf(pVCpu->CTX_SUFF(pVM), pRange->uValue / 2 + 0x80000001);
+    if (pLeaf)
+    {
+        if (!(pRange->uValue & 1))
+            *puValue = RT_MAKE_U64(pLeaf->uEax, pLeaf->uEbx);
+        else
+            *puValue = RT_MAKE_U64(pLeaf->uEcx, pLeaf->uEdx);
+    }
+    else
+        *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8CpuNameN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Remember guest programmed CPU name. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8HwThermalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD HTC. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8HwThermalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD HTC. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SwThermalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD STC. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SwThermalCtrl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD STC. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8FidVidControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD FIDVID_CTL. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8FidVidControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD FIDVID_CTL. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8FidVidStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD FIDVID_STATUS. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8McCtlMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD MC. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8McCtlMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD MC. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmiOnIoTrapN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM/SMI and I/O trap. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmiOnIoTrapN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM/SMI and I/O trap. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmiOnIoTrapCtlSts(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM/SMI and I/O trap. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmiOnIoTrapCtlSts(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM/SMI and I/O trap. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8IntPendingMessage(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Interrupt pending message. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8IntPendingMessage(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Interrupt pending message. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmiTriggerIoCycle(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM/SMI and trigger I/O cycle. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmiTriggerIoCycle(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM/SMI and trigger I/O cycle. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hMmioCfgBaseAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD MMIO Configuration base address. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hMmioCfgBaseAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD MMIO Configuration base address. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hTrapCtlMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD 0xc0010059. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hTrapCtlMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD 0xc0010059. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hPStateCurLimit(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD P-states. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hPStateControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD P-states. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hPStateControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD P-states. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hPStateStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD P-states. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hPStateStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD P-states. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hPStateN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD P-states. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hPStateN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD P-states. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hCofVidControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD P-states. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hCofVidControl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD P-states. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hCofVidStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD P-states. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hCofVidStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* Note! Writing 0 seems to not GP, not sure if it does anything to the value... */
+    /** @todo AMD P-states. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hCStateIoBaseAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD C-states. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hCStateIoBaseAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD C-states. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hCpuWatchdogTimer(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD machine checks. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hCpuWatchdogTimer(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD machine checks. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmmBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmmBase(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmmAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmmAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM. */
+    return VINF_SUCCESS;
+}
+
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmmMask(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmmMask(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8VmCr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    PVM pVM = pVCpu->CTX_SUFF(pVM);
+    if (pVM->cpum.s.GuestFeatures.fSvm)
+        *puValue = MSR_K8_VM_CR_LOCK;
+    else
+        *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8VmCr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    PVM pVM = pVCpu->CTX_SUFF(pVM);
+    if (pVM->cpum.s.GuestFeatures.fSvm)
+    {
+        /* Silently ignore writes to LOCK and SVM_DISABLE bit when the LOCK bit is set (see cpumMsrRd_AmdK8VmCr). */
+        if (uValue & (MSR_K8_VM_CR_DPD | MSR_K8_VM_CR_R_INIT | MSR_K8_VM_CR_DIS_A20M))
+            return VERR_CPUM_RAISE_GP_0;
+        return VINF_SUCCESS;
+    }
+    return VERR_CPUM_RAISE_GP_0;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8IgnNe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IGNNE\# control. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8IgnNe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IGNNE\# control. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8SmmCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8SmmCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8VmHSavePa(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    *puValue = pVCpu->cpum.s.Guest.hwvirt.svm.uMsrHSavePa;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8VmHSavePa(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uRawValue);
+    if (uValue & UINT64_C(0xfff))
+    {
+        Log(("CPUM: Invalid setting of low 12 bits set writing host-state save area MSR %#x: %#llx\n", idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    uint64_t fInvPhysMask = ~(RT_BIT_64(pVCpu->CTX_SUFF(pVM)->cpum.s.GuestFeatures.cMaxPhysAddrWidth) - 1U);
+    if (fInvPhysMask & uValue)
+    {
+        Log(("CPUM: Invalid physical address bits set writing host-state save area MSR %#x: %#llx (%#llx)\n",
+             idMsr, uValue, uValue & fInvPhysMask));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    pVCpu->cpum.s.Guest.hwvirt.svm.uMsrHSavePa = uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hVmLockKey(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SVM. */
+    *puValue = 0; /* RAZ */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hVmLockKey(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SVM. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hSmmLockKey(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM. */
+    *puValue = 0; /* RAZ */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hSmmLockKey(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hLocalSmiStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD SMM/SMI. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hLocalSmiStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD SMM/SMI. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hOsVisWrkIdLength(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr);
+    /** @todo AMD OS visible workaround. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hOsVisWrkIdLength(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD OS visible workaround. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hOsVisWrkStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD OS visible workaround. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hOsVisWrkStatus(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD OS visible workaround. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam16hL2IPerfCtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD L2I performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam16hL2IPerfCtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD L2I performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam16hL2IPerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD L2I performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam16hL2IPerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD L2I performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hNorthbridgePerfCtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD Northbridge performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hNorthbridgePerfCtlN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD Northbridge performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hNorthbridgePerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD Northbridge performance counters. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hNorthbridgePerfCtrN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD Northbridge performance counters. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7MicrocodeCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus. Need to be explored and verify K7 presence. */
+    /** @todo Undocumented register only seen mentioned in fam15h erratum \#608. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7MicrocodeCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo Undocumented register only seen mentioned in fam15h erratum \#608. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7ClusterIdMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus. Need to be explored and verify K7 presence. */
+    /** @todo Undocumented register only seen mentioned in fam16h BKDG r3.00 when
+     *        describing EBL_CR_POWERON. */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7ClusterIdMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo Undocumented register only seen mentioned in fam16h BKDG r3.00 when
+     *        describing EBL_CR_POWERON. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8CpuIdCtlStd07hEbax(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    bool           fIgnored;
+    PCPUMCPUIDLEAF pLeaf = cpumCpuIdGetLeafEx(pVCpu->CTX_SUFF(pVM), 0x00000007, 0, &fIgnored);
+    if (pLeaf)
+        *puValue = RT_MAKE_U64(pLeaf->uEbx, pLeaf->uEax);
+    else
+        *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8CpuIdCtlStd07hEbax(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Changing CPUID leaf 7/0. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8CpuIdCtlStd06hEcx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    PCPUMCPUIDLEAF pLeaf = cpumCpuIdGetLeaf(pVCpu->CTX_SUFF(pVM), 0x00000006);
+    if (pLeaf)
+        *puValue = pLeaf->uEcx;
+    else
+        *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8CpuIdCtlStd06hEcx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Changing CPUID leaf 6. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8CpuIdCtlStd01hEdcx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    PCPUMCPUIDLEAF pLeaf = cpumCpuIdGetLeaf(pVCpu->CTX_SUFF(pVM), 0x00000001);
+    if (pLeaf)
+        *puValue = RT_MAKE_U64(pLeaf->uEdx, pLeaf->uEcx);
+    else
+        *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8CpuIdCtlStd01hEdcx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Changing CPUID leaf 0x80000001. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8CpuIdCtlExt01hEdcx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    PCPUMCPUIDLEAF pLeaf = cpumCpuIdGetLeaf(pVCpu->CTX_SUFF(pVM), 0x80000001);
+    if (pLeaf)
+        *puValue = RT_MAKE_U64(pLeaf->uEdx, pLeaf->uEcx);
+    else
+        *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8CpuIdCtlExt01hEdcx(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Changing CPUID leaf 0x80000001. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK8PatchLevel(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Fake AMD microcode patching.  */
+    *puValue = pRange->uValue;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK8PatchLoader(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Fake AMD microcode patching.  */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7DebugStatusMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7DebugStatusMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7BHTraceBaseMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7BHTraceBaseMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7BHTracePtrMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7BHTracePtrMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7BHTraceLimitMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7BHTraceLimitMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7HardwareDebugToolCfgMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7HardwareDebugToolCfgMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7FastFlushCountMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7FastFlushCountMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo undocumented */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7NodeId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD node ID and bios scratch. */
+    *puValue = 0; /* nodeid = 0; nodes-per-cpu = 1 */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7NodeId(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD node ID and bios scratch. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7DrXAddrMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD DRx address masking (range breakpoints). */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7DrXAddrMaskN(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD DRx address masking (range breakpoints). */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7Dr0DataMatchMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD undocument debugging features. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7Dr0DataMatchMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD undocument debugging features. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7Dr0DataMaskMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD undocument debugging features. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7Dr0DataMaskMaybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD undocument debugging features. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7LoadStoreCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD load-store config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7LoadStoreCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD load-store config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7InstrCacheCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD instruction cache config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7InstrCacheCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD instruction cache config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7DataCacheCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD data cache config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7DataCacheCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD data cache config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7BusUnitCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD bus unit config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7BusUnitCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo AMD bus unit config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdK7DebugCtl2Maybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo Undocument AMD debug control register \#2. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdK7DebugCtl2Maybe(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo Allegedly requiring edi=0x9c5a203a when execuing rdmsr/wrmsr on older
+     *  cpus.  Need to be explored and verify K7 presence.  */
+    /** @todo Undocument AMD debug control register \#2. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hFpuCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD FPU config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hFpuCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD FPU config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hDecoderCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD decoder config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hDecoderCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD decoder config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hBusUnitCfg2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /* Note! 10h and 16h */
+    /** @todo AMD bus unit  config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hBusUnitCfg2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /* Note! 10h and 16h */
+    /** @todo AMD bus unit config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hCombUnitCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD unit config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hCombUnitCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD unit config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hCombUnitCfg2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD unit config 2. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hCombUnitCfg2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD unit config 2. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hCombUnitCfg3(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD combined unit config 3. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hCombUnitCfg3(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD combined unit config 3. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hExecUnitCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD execution unit config. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hExecUnitCfg(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD execution unit config. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam15hLoadStoreCfg2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD load-store config 2. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam15hLoadStoreCfg2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD load-store config 2. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsFetchCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsFetchCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsFetchLinAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsFetchLinAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsFetchPhysAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsFetchPhysAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsOpExecCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsOpExecCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsOpRip(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsOpRip(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsOpData(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsOpData(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsOpData2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsOpData2(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsOpData3(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsOpData3(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsDcLinAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsDcLinAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsDcPhysAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsDcPhysAddr(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam10hIbsCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam10hIbsCtl(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_AmdFam14hIbsBrTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+    /** @todo AMD IBS. */
+    *puValue = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_AmdFam14hIbsBrTarget(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+    RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange); RT_NOREF_PV(uValue); RT_NOREF_PV(uRawValue);
+    /** @todo AMD IBS. */
+    if (!X86_IS_CANONICAL(uValue))
+    {
+        Log(("CPUM: wrmsr %s(%#x), %#llx -> #GP - not canonical\n", pRange->szName, idMsr, uValue));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+    return VINF_SUCCESS;
+}
+
+
+
+/*
+ * GIM MSRs.
+ * GIM MSRs.
+ * GIM MSRs.
+ */
+
+
+/** @callback_method_impl{FNCPUMRDMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrRd_Gim(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
+{
+#if defined(VBOX_WITH_NESTED_HWVIRT_SVM) || defined(VBOX_WITH_NESTED_HWVIRT_VMX)
+    /* Raise #GP(0) like a physical CPU would since the nested-hypervisor hasn't intercept these MSRs. */
+    if (   CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.s.Guest)
+        || CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.s.Guest))
+        return VERR_CPUM_RAISE_GP_0;
+#endif
+    return GIMReadMsr(pVCpu, idMsr, pRange, puValue);
+}
+
+
+/** @callback_method_impl{FNCPUMWRMSR} */
+static DECLCALLBACK(VBOXSTRICTRC) cpumMsrWr_Gim(PVMCPUCC pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uValue, uint64_t uRawValue)
+{
+#if defined(VBOX_WITH_NESTED_HWVIRT_SVM) || defined(VBOX_WITH_NESTED_HWVIRT_VMX)
+    /* Raise #GP(0) like a physical CPU would since the nested-hypervisor hasn't intercept these MSRs. */
+    if (   CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.s.Guest)
+        || CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.s.Guest))
+        return VERR_CPUM_RAISE_GP_0;
+#endif
+    return GIMWriteMsr(pVCpu, idMsr, pRange, uValue, uRawValue);
+}
+
+
+/**
+ * MSR read function table.
+ */
+static const PFNCPUMRDMSR g_aCpumRdMsrFns[kCpumMsrRdFn_End] =
+{
+    NULL, /* Invalid */
+    cpumMsrRd_FixedValue,
+    NULL, /* Alias */
+    cpumMsrRd_WriteOnly,
+    cpumMsrRd_Ia32P5McAddr,
+    cpumMsrRd_Ia32P5McType,
+    cpumMsrRd_Ia32TimestampCounter,
+    cpumMsrRd_Ia32PlatformId,
+    cpumMsrRd_Ia32ApicBase,
+    cpumMsrRd_Ia32FeatureControl,
+    cpumMsrRd_Ia32BiosSignId,
+    cpumMsrRd_Ia32SmmMonitorCtl,
+    cpumMsrRd_Ia32PmcN,
+    cpumMsrRd_Ia32MonitorFilterLineSize,
+    cpumMsrRd_Ia32MPerf,
+    cpumMsrRd_Ia32APerf,
+    cpumMsrRd_Ia32MtrrCap,
+    cpumMsrRd_Ia32MtrrPhysBaseN,
+    cpumMsrRd_Ia32MtrrPhysMaskN,
+    cpumMsrRd_Ia32MtrrFixed,
+    cpumMsrRd_Ia32MtrrDefType,
+    cpumMsrRd_Ia32Pat,
+    cpumMsrRd_Ia32SysEnterCs,
+    cpumMsrRd_Ia32SysEnterEsp,
+    cpumMsrRd_Ia32SysEnterEip,
+    cpumMsrRd_Ia32McgCap,
+    cpumMsrRd_Ia32McgStatus,
+    cpumMsrRd_Ia32McgCtl,
+    cpumMsrRd_Ia32DebugCtl,
+    cpumMsrRd_Ia32SmrrPhysBase,
+    cpumMsrRd_Ia32SmrrPhysMask,
+    cpumMsrRd_Ia32PlatformDcaCap,
+    cpumMsrRd_Ia32CpuDcaCap,
+    cpumMsrRd_Ia32Dca0Cap,
+    cpumMsrRd_Ia32PerfEvtSelN,
+    cpumMsrRd_Ia32PerfStatus,
+    cpumMsrRd_Ia32PerfCtl,
+    cpumMsrRd_Ia32FixedCtrN,
+    cpumMsrRd_Ia32PerfCapabilities,
+    cpumMsrRd_Ia32FixedCtrCtrl,
+    cpumMsrRd_Ia32PerfGlobalStatus,
+    cpumMsrRd_Ia32PerfGlobalCtrl,
+    cpumMsrRd_Ia32PerfGlobalOvfCtrl,
+    cpumMsrRd_Ia32PebsEnable,
+    cpumMsrRd_Ia32ClockModulation,
+    cpumMsrRd_Ia32ThermInterrupt,
+    cpumMsrRd_Ia32ThermStatus,
+    cpumMsrRd_Ia32Therm2Ctl,
+    cpumMsrRd_Ia32MiscEnable,
+    cpumMsrRd_Ia32McCtlStatusAddrMiscN,
+    cpumMsrRd_Ia32McNCtl2,
+    cpumMsrRd_Ia32DsArea,
+    cpumMsrRd_Ia32TscDeadline,
+    cpumMsrRd_Ia32X2ApicN,
+    cpumMsrRd_Ia32DebugInterface,
+    cpumMsrRd_Ia32VmxBasic,
+    cpumMsrRd_Ia32VmxPinbasedCtls,
+    cpumMsrRd_Ia32VmxProcbasedCtls,
+    cpumMsrRd_Ia32VmxExitCtls,
+    cpumMsrRd_Ia32VmxEntryCtls,
+    cpumMsrRd_Ia32VmxMisc,
+    cpumMsrRd_Ia32VmxCr0Fixed0,
+    cpumMsrRd_Ia32VmxCr0Fixed1,
+    cpumMsrRd_Ia32VmxCr4Fixed0,
+    cpumMsrRd_Ia32VmxCr4Fixed1,
+    cpumMsrRd_Ia32VmxVmcsEnum,
+    cpumMsrRd_Ia32VmxProcBasedCtls2,
+    cpumMsrRd_Ia32VmxEptVpidCap,
+    cpumMsrRd_Ia32VmxTruePinbasedCtls,
+    cpumMsrRd_Ia32VmxTrueProcbasedCtls,
+    cpumMsrRd_Ia32VmxTrueExitCtls,
+    cpumMsrRd_Ia32VmxTrueEntryCtls,
+    cpumMsrRd_Ia32VmxVmFunc,
+    cpumMsrRd_Ia32SpecCtrl,
+    cpumMsrRd_Ia32ArchCapabilities,
+
+    cpumMsrRd_Amd64Efer,
+    cpumMsrRd_Amd64SyscallTarget,
+    cpumMsrRd_Amd64LongSyscallTarget,
+    cpumMsrRd_Amd64CompSyscallTarget,
+    cpumMsrRd_Amd64SyscallFlagMask,
+    cpumMsrRd_Amd64FsBase,
+    cpumMsrRd_Amd64GsBase,
+    cpumMsrRd_Amd64KernelGsBase,
+    cpumMsrRd_Amd64TscAux,
+
+    cpumMsrRd_IntelEblCrPowerOn,
+    cpumMsrRd_IntelI7CoreThreadCount,
+    cpumMsrRd_IntelP4EbcHardPowerOn,
+    cpumMsrRd_IntelP4EbcSoftPowerOn,
+    cpumMsrRd_IntelP4EbcFrequencyId,
+    cpumMsrRd_IntelP6FsbFrequency,
+    cpumMsrRd_IntelPlatformInfo,
+    cpumMsrRd_IntelFlexRatio,
+    cpumMsrRd_IntelPkgCStConfigControl,
+    cpumMsrRd_IntelPmgIoCaptureBase,
+    cpumMsrRd_IntelLastBranchFromToN,
+    cpumMsrRd_IntelLastBranchFromN,
+    cpumMsrRd_IntelLastBranchToN,
+    cpumMsrRd_IntelLastBranchTos,
+    cpumMsrRd_IntelBblCrCtl,
+    cpumMsrRd_IntelBblCrCtl3,
+    cpumMsrRd_IntelI7TemperatureTarget,
+    cpumMsrRd_IntelI7MsrOffCoreResponseN,
+    cpumMsrRd_IntelI7MiscPwrMgmt,
+    cpumMsrRd_IntelP6CrN,
+    cpumMsrRd_IntelCpuId1FeatureMaskEcdx,
+    cpumMsrRd_IntelCpuId1FeatureMaskEax,
+    cpumMsrRd_IntelCpuId80000001FeatureMaskEcdx,
+    cpumMsrRd_IntelI7SandyAesNiCtl,
+    cpumMsrRd_IntelI7TurboRatioLimit,
+    cpumMsrRd_IntelI7LbrSelect,
+    cpumMsrRd_IntelI7SandyErrorControl,
+    cpumMsrRd_IntelI7VirtualLegacyWireCap,
+    cpumMsrRd_IntelI7PowerCtl,
+    cpumMsrRd_IntelI7SandyPebsNumAlt,
+    cpumMsrRd_IntelI7PebsLdLat,
+    cpumMsrRd_IntelI7PkgCnResidencyN,
+    cpumMsrRd_IntelI7CoreCnResidencyN,
+    cpumMsrRd_IntelI7SandyVrCurrentConfig,
+    cpumMsrRd_IntelI7SandyVrMiscConfig,
+    cpumMsrRd_IntelI7SandyRaplPowerUnit,
+    cpumMsrRd_IntelI7SandyPkgCnIrtlN,
+    cpumMsrRd_IntelI7SandyPkgC2Residency,
+    cpumMsrRd_IntelI7RaplPkgPowerLimit,
+    cpumMsrRd_IntelI7RaplPkgEnergyStatus,
+    cpumMsrRd_IntelI7RaplPkgPerfStatus,
+    cpumMsrRd_IntelI7RaplPkgPowerInfo,
+    cpumMsrRd_IntelI7RaplDramPowerLimit,
+    cpumMsrRd_IntelI7RaplDramEnergyStatus,
+    cpumMsrRd_IntelI7RaplDramPerfStatus,
+    cpumMsrRd_IntelI7RaplDramPowerInfo,
+    cpumMsrRd_IntelI7RaplPp0PowerLimit,
+    cpumMsrRd_IntelI7RaplPp0EnergyStatus,
+    cpumMsrRd_IntelI7RaplPp0Policy,
+    cpumMsrRd_IntelI7RaplPp0PerfStatus,
+    cpumMsrRd_IntelI7RaplPp1PowerLimit,
+    cpumMsrRd_IntelI7RaplPp1EnergyStatus,
+    cpumMsrRd_IntelI7RaplPp1Policy,
+    cpumMsrRd_IntelI7IvyConfigTdpNominal,
+    cpumMsrRd_IntelI7IvyConfigTdpLevel1,
+    cpumMsrRd_IntelI7IvyConfigTdpLevel2,
+    cpumMsrRd_IntelI7IvyConfigTdpControl,
+    cpumMsrRd_IntelI7IvyTurboActivationRatio,
+    cpumMsrRd_IntelI7UncPerfGlobalCtrl,
+    cpumMsrRd_IntelI7UncPerfGlobalStatus,
+    cpumMsrRd_IntelI7UncPerfGlobalOvfCtrl,
+    cpumMsrRd_IntelI7UncPerfFixedCtrCtrl,
+    cpumMsrRd_IntelI7UncPerfFixedCtr,
+    cpumMsrRd_IntelI7UncCBoxConfig,
+    cpumMsrRd_IntelI7UncArbPerfCtrN,
+    cpumMsrRd_IntelI7UncArbPerfEvtSelN,
+    cpumMsrRd_IntelI7SmiCount,
+    cpumMsrRd_IntelCore2EmttmCrTablesN,
+    cpumMsrRd_IntelCore2SmmCStMiscInfo,
+    cpumMsrRd_IntelCore1ExtConfig,
+    cpumMsrRd_IntelCore1DtsCalControl,
+    cpumMsrRd_IntelCore2PeciControl,
+    cpumMsrRd_IntelAtSilvCoreC1Recidency,
+
+    cpumMsrRd_P6LastBranchFromIp,
+    cpumMsrRd_P6LastBranchToIp,
+    cpumMsrRd_P6LastIntFromIp,
+    cpumMsrRd_P6LastIntToIp,
+
+    cpumMsrRd_AmdFam15hTscRate,
+    cpumMsrRd_AmdFam15hLwpCfg,
+    cpumMsrRd_AmdFam15hLwpCbAddr,
+    cpumMsrRd_AmdFam10hMc4MiscN,
+    cpumMsrRd_AmdK8PerfCtlN,
+    cpumMsrRd_AmdK8PerfCtrN,
+    cpumMsrRd_AmdK8SysCfg,
+    cpumMsrRd_AmdK8HwCr,
+    cpumMsrRd_AmdK8IorrBaseN,
+    cpumMsrRd_AmdK8IorrMaskN,
+    cpumMsrRd_AmdK8TopOfMemN,
+    cpumMsrRd_AmdK8NbCfg1,
+    cpumMsrRd_AmdK8McXcptRedir,
+    cpumMsrRd_AmdK8CpuNameN,
+    cpumMsrRd_AmdK8HwThermalCtrl,
+    cpumMsrRd_AmdK8SwThermalCtrl,
+    cpumMsrRd_AmdK8FidVidControl,
+    cpumMsrRd_AmdK8FidVidStatus,
+    cpumMsrRd_AmdK8McCtlMaskN,
+    cpumMsrRd_AmdK8SmiOnIoTrapN,
+    cpumMsrRd_AmdK8SmiOnIoTrapCtlSts,
+    cpumMsrRd_AmdK8IntPendingMessage,
+    cpumMsrRd_AmdK8SmiTriggerIoCycle,
+    cpumMsrRd_AmdFam10hMmioCfgBaseAddr,
+    cpumMsrRd_AmdFam10hTrapCtlMaybe,
+    cpumMsrRd_AmdFam10hPStateCurLimit,
+    cpumMsrRd_AmdFam10hPStateControl,
+    cpumMsrRd_AmdFam10hPStateStatus,
+    cpumMsrRd_AmdFam10hPStateN,
+    cpumMsrRd_AmdFam10hCofVidControl,
+    cpumMsrRd_AmdFam10hCofVidStatus,
+    cpumMsrRd_AmdFam10hCStateIoBaseAddr,
+    cpumMsrRd_AmdFam10hCpuWatchdogTimer,
+    cpumMsrRd_AmdK8SmmBase,
+    cpumMsrRd_AmdK8SmmAddr,
+    cpumMsrRd_AmdK8SmmMask,
+    cpumMsrRd_AmdK8VmCr,
+    cpumMsrRd_AmdK8IgnNe,
+    cpumMsrRd_AmdK8SmmCtl,
+    cpumMsrRd_AmdK8VmHSavePa,
+    cpumMsrRd_AmdFam10hVmLockKey,
+    cpumMsrRd_AmdFam10hSmmLockKey,
+    cpumMsrRd_AmdFam10hLocalSmiStatus,
+    cpumMsrRd_AmdFam10hOsVisWrkIdLength,
+    cpumMsrRd_AmdFam10hOsVisWrkStatus,
+    cpumMsrRd_AmdFam16hL2IPerfCtlN,
+    cpumMsrRd_AmdFam16hL2IPerfCtrN,
+    cpumMsrRd_AmdFam15hNorthbridgePerfCtlN,
+    cpumMsrRd_AmdFam15hNorthbridgePerfCtrN,
+    cpumMsrRd_AmdK7MicrocodeCtl,
+    cpumMsrRd_AmdK7ClusterIdMaybe,
+    cpumMsrRd_AmdK8CpuIdCtlStd07hEbax,
+    cpumMsrRd_AmdK8CpuIdCtlStd06hEcx,
+    cpumMsrRd_AmdK8CpuIdCtlStd01hEdcx,
+    cpumMsrRd_AmdK8CpuIdCtlExt01hEdcx,
+    cpumMsrRd_AmdK8PatchLevel,
+    cpumMsrRd_AmdK7DebugStatusMaybe,
+    cpumMsrRd_AmdK7BHTraceBaseMaybe,
+    cpumMsrRd_AmdK7BHTracePtrMaybe,
+    cpumMsrRd_AmdK7BHTraceLimitMaybe,
+    cpumMsrRd_AmdK7HardwareDebugToolCfgMaybe,
+    cpumMsrRd_AmdK7FastFlushCountMaybe,
+    cpumMsrRd_AmdK7NodeId,
+    cpumMsrRd_AmdK7DrXAddrMaskN,
+    cpumMsrRd_AmdK7Dr0DataMatchMaybe,
+    cpumMsrRd_AmdK7Dr0DataMaskMaybe,
+    cpumMsrRd_AmdK7LoadStoreCfg,
+    cpumMsrRd_AmdK7InstrCacheCfg,
+    cpumMsrRd_AmdK7DataCacheCfg,
+    cpumMsrRd_AmdK7BusUnitCfg,
+    cpumMsrRd_AmdK7DebugCtl2Maybe,
+    cpumMsrRd_AmdFam15hFpuCfg,
+    cpumMsrRd_AmdFam15hDecoderCfg,
+    cpumMsrRd_AmdFam10hBusUnitCfg2,
+    cpumMsrRd_AmdFam15hCombUnitCfg,
+    cpumMsrRd_AmdFam15hCombUnitCfg2,
+    cpumMsrRd_AmdFam15hCombUnitCfg3,
+    cpumMsrRd_AmdFam15hExecUnitCfg,
+    cpumMsrRd_AmdFam15hLoadStoreCfg2,
+    cpumMsrRd_AmdFam10hIbsFetchCtl,
+    cpumMsrRd_AmdFam10hIbsFetchLinAddr,
+    cpumMsrRd_AmdFam10hIbsFetchPhysAddr,
+    cpumMsrRd_AmdFam10hIbsOpExecCtl,
+    cpumMsrRd_AmdFam10hIbsOpRip,
+    cpumMsrRd_AmdFam10hIbsOpData,
+    cpumMsrRd_AmdFam10hIbsOpData2,
+    cpumMsrRd_AmdFam10hIbsOpData3,
+    cpumMsrRd_AmdFam10hIbsDcLinAddr,
+    cpumMsrRd_AmdFam10hIbsDcPhysAddr,
+    cpumMsrRd_AmdFam10hIbsCtl,
+    cpumMsrRd_AmdFam14hIbsBrTarget,
+
+    cpumMsrRd_Gim
+};
+
+
+/**
+ * MSR write function table.
+ */
+static const PFNCPUMWRMSR g_aCpumWrMsrFns[kCpumMsrWrFn_End] =
+{
+    NULL, /* Invalid */
+    cpumMsrWr_IgnoreWrite,
+    cpumMsrWr_ReadOnly,
+    NULL, /* Alias */
+    cpumMsrWr_Ia32P5McAddr,
+    cpumMsrWr_Ia32P5McType,
+    cpumMsrWr_Ia32TimestampCounter,
+    cpumMsrWr_Ia32ApicBase,
+    cpumMsrWr_Ia32FeatureControl,
+    cpumMsrWr_Ia32BiosSignId,
+    cpumMsrWr_Ia32BiosUpdateTrigger,
+    cpumMsrWr_Ia32SmmMonitorCtl,
+    cpumMsrWr_Ia32PmcN,
+    cpumMsrWr_Ia32MonitorFilterLineSize,
+    cpumMsrWr_Ia32MPerf,
+    cpumMsrWr_Ia32APerf,
+    cpumMsrWr_Ia32MtrrPhysBaseN,
+    cpumMsrWr_Ia32MtrrPhysMaskN,
+    cpumMsrWr_Ia32MtrrFixed,
+    cpumMsrWr_Ia32MtrrDefType,
+    cpumMsrWr_Ia32Pat,
+    cpumMsrWr_Ia32SysEnterCs,
+    cpumMsrWr_Ia32SysEnterEsp,
+    cpumMsrWr_Ia32SysEnterEip,
+    cpumMsrWr_Ia32McgStatus,
+    cpumMsrWr_Ia32McgCtl,
+    cpumMsrWr_Ia32DebugCtl,
+    cpumMsrWr_Ia32SmrrPhysBase,
+    cpumMsrWr_Ia32SmrrPhysMask,
+    cpumMsrWr_Ia32PlatformDcaCap,
+    cpumMsrWr_Ia32Dca0Cap,
+    cpumMsrWr_Ia32PerfEvtSelN,
+    cpumMsrWr_Ia32PerfStatus,
+    cpumMsrWr_Ia32PerfCtl,
+    cpumMsrWr_Ia32FixedCtrN,
+    cpumMsrWr_Ia32PerfCapabilities,
+    cpumMsrWr_Ia32FixedCtrCtrl,
+    cpumMsrWr_Ia32PerfGlobalStatus,
+    cpumMsrWr_Ia32PerfGlobalCtrl,
+    cpumMsrWr_Ia32PerfGlobalOvfCtrl,
+    cpumMsrWr_Ia32PebsEnable,
+    cpumMsrWr_Ia32ClockModulation,
+    cpumMsrWr_Ia32ThermInterrupt,
+    cpumMsrWr_Ia32ThermStatus,
+    cpumMsrWr_Ia32Therm2Ctl,
+    cpumMsrWr_Ia32MiscEnable,
+    cpumMsrWr_Ia32McCtlStatusAddrMiscN,
+    cpumMsrWr_Ia32McNCtl2,
+    cpumMsrWr_Ia32DsArea,
+    cpumMsrWr_Ia32TscDeadline,
+    cpumMsrWr_Ia32X2ApicN,
+    cpumMsrWr_Ia32DebugInterface,
+    cpumMsrWr_Ia32SpecCtrl,
+    cpumMsrWr_Ia32PredCmd,
+    cpumMsrWr_Ia32FlushCmd,
+
+    cpumMsrWr_Amd64Efer,
+    cpumMsrWr_Amd64SyscallTarget,
+    cpumMsrWr_Amd64LongSyscallTarget,
+    cpumMsrWr_Amd64CompSyscallTarget,
+    cpumMsrWr_Amd64SyscallFlagMask,
+    cpumMsrWr_Amd64FsBase,
+    cpumMsrWr_Amd64GsBase,
+    cpumMsrWr_Amd64KernelGsBase,
+    cpumMsrWr_Amd64TscAux,
+
+    cpumMsrWr_IntelEblCrPowerOn,
+    cpumMsrWr_IntelP4EbcHardPowerOn,
+    cpumMsrWr_IntelP4EbcSoftPowerOn,
+    cpumMsrWr_IntelP4EbcFrequencyId,
+    cpumMsrWr_IntelFlexRatio,
+    cpumMsrWr_IntelPkgCStConfigControl,
+    cpumMsrWr_IntelPmgIoCaptureBase,
+    cpumMsrWr_IntelLastBranchFromToN,
+    cpumMsrWr_IntelLastBranchFromN,
+    cpumMsrWr_IntelLastBranchToN,
+    cpumMsrWr_IntelLastBranchTos,
+    cpumMsrWr_IntelBblCrCtl,
+    cpumMsrWr_IntelBblCrCtl3,
+    cpumMsrWr_IntelI7TemperatureTarget,
+    cpumMsrWr_IntelI7MsrOffCoreResponseN,
+    cpumMsrWr_IntelI7MiscPwrMgmt,
+    cpumMsrWr_IntelP6CrN,
+    cpumMsrWr_IntelCpuId1FeatureMaskEcdx,
+    cpumMsrWr_IntelCpuId1FeatureMaskEax,
+    cpumMsrWr_IntelCpuId80000001FeatureMaskEcdx,
+    cpumMsrWr_IntelI7SandyAesNiCtl,
+    cpumMsrWr_IntelI7TurboRatioLimit,
+    cpumMsrWr_IntelI7LbrSelect,
+    cpumMsrWr_IntelI7SandyErrorControl,
+    cpumMsrWr_IntelI7PowerCtl,
+    cpumMsrWr_IntelI7SandyPebsNumAlt,
+    cpumMsrWr_IntelI7PebsLdLat,
+    cpumMsrWr_IntelI7SandyVrCurrentConfig,
+    cpumMsrWr_IntelI7SandyVrMiscConfig,
+    cpumMsrWr_IntelI7SandyRaplPowerUnit,
+    cpumMsrWr_IntelI7SandyPkgCnIrtlN,
+    cpumMsrWr_IntelI7SandyPkgC2Residency,
+    cpumMsrWr_IntelI7RaplPkgPowerLimit,
+    cpumMsrWr_IntelI7RaplDramPowerLimit,
+    cpumMsrWr_IntelI7RaplPp0PowerLimit,
+    cpumMsrWr_IntelI7RaplPp0Policy,
+    cpumMsrWr_IntelI7RaplPp1PowerLimit,
+    cpumMsrWr_IntelI7RaplPp1Policy,
+    cpumMsrWr_IntelI7IvyConfigTdpControl,
+    cpumMsrWr_IntelI7IvyTurboActivationRatio,
+    cpumMsrWr_IntelI7UncPerfGlobalCtrl,
+    cpumMsrWr_IntelI7UncPerfGlobalStatus,
+    cpumMsrWr_IntelI7UncPerfGlobalOvfCtrl,
+    cpumMsrWr_IntelI7UncPerfFixedCtrCtrl,
+    cpumMsrWr_IntelI7UncPerfFixedCtr,
+    cpumMsrWr_IntelI7UncArbPerfCtrN,
+    cpumMsrWr_IntelI7UncArbPerfEvtSelN,
+    cpumMsrWr_IntelCore2EmttmCrTablesN,
+    cpumMsrWr_IntelCore2SmmCStMiscInfo,
+    cpumMsrWr_IntelCore1ExtConfig,
+    cpumMsrWr_IntelCore1DtsCalControl,
+    cpumMsrWr_IntelCore2PeciControl,
+
+    cpumMsrWr_P6LastIntFromIp,
+    cpumMsrWr_P6LastIntToIp,
+
+    cpumMsrWr_AmdFam15hTscRate,
+    cpumMsrWr_AmdFam15hLwpCfg,
+    cpumMsrWr_AmdFam15hLwpCbAddr,
+    cpumMsrWr_AmdFam10hMc4MiscN,
+    cpumMsrWr_AmdK8PerfCtlN,
+    cpumMsrWr_AmdK8PerfCtrN,
+    cpumMsrWr_AmdK8SysCfg,
+    cpumMsrWr_AmdK8HwCr,
+    cpumMsrWr_AmdK8IorrBaseN,
+    cpumMsrWr_AmdK8IorrMaskN,
+    cpumMsrWr_AmdK8TopOfMemN,
+    cpumMsrWr_AmdK8NbCfg1,
+    cpumMsrWr_AmdK8McXcptRedir,
+    cpumMsrWr_AmdK8CpuNameN,
+    cpumMsrWr_AmdK8HwThermalCtrl,
+    cpumMsrWr_AmdK8SwThermalCtrl,
+    cpumMsrWr_AmdK8FidVidControl,
+    cpumMsrWr_AmdK8McCtlMaskN,
+    cpumMsrWr_AmdK8SmiOnIoTrapN,
+    cpumMsrWr_AmdK8SmiOnIoTrapCtlSts,
+    cpumMsrWr_AmdK8IntPendingMessage,
+    cpumMsrWr_AmdK8SmiTriggerIoCycle,
+    cpumMsrWr_AmdFam10hMmioCfgBaseAddr,
+    cpumMsrWr_AmdFam10hTrapCtlMaybe,
+    cpumMsrWr_AmdFam10hPStateControl,
+    cpumMsrWr_AmdFam10hPStateStatus,
+    cpumMsrWr_AmdFam10hPStateN,
+    cpumMsrWr_AmdFam10hCofVidControl,
+    cpumMsrWr_AmdFam10hCofVidStatus,
+    cpumMsrWr_AmdFam10hCStateIoBaseAddr,
+    cpumMsrWr_AmdFam10hCpuWatchdogTimer,
+    cpumMsrWr_AmdK8SmmBase,
+    cpumMsrWr_AmdK8SmmAddr,
+    cpumMsrWr_AmdK8SmmMask,
+    cpumMsrWr_AmdK8VmCr,
+    cpumMsrWr_AmdK8IgnNe,
+    cpumMsrWr_AmdK8SmmCtl,
+    cpumMsrWr_AmdK8VmHSavePa,
+    cpumMsrWr_AmdFam10hVmLockKey,
+    cpumMsrWr_AmdFam10hSmmLockKey,
+    cpumMsrWr_AmdFam10hLocalSmiStatus,
+    cpumMsrWr_AmdFam10hOsVisWrkIdLength,
+    cpumMsrWr_AmdFam10hOsVisWrkStatus,
+    cpumMsrWr_AmdFam16hL2IPerfCtlN,
+    cpumMsrWr_AmdFam16hL2IPerfCtrN,
+    cpumMsrWr_AmdFam15hNorthbridgePerfCtlN,
+    cpumMsrWr_AmdFam15hNorthbridgePerfCtrN,
+    cpumMsrWr_AmdK7MicrocodeCtl,
+    cpumMsrWr_AmdK7ClusterIdMaybe,
+    cpumMsrWr_AmdK8CpuIdCtlStd07hEbax,
+    cpumMsrWr_AmdK8CpuIdCtlStd06hEcx,
+    cpumMsrWr_AmdK8CpuIdCtlStd01hEdcx,
+    cpumMsrWr_AmdK8CpuIdCtlExt01hEdcx,
+    cpumMsrWr_AmdK8PatchLoader,
+    cpumMsrWr_AmdK7DebugStatusMaybe,
+    cpumMsrWr_AmdK7BHTraceBaseMaybe,
+    cpumMsrWr_AmdK7BHTracePtrMaybe,
+    cpumMsrWr_AmdK7BHTraceLimitMaybe,
+    cpumMsrWr_AmdK7HardwareDebugToolCfgMaybe,
+    cpumMsrWr_AmdK7FastFlushCountMaybe,
+    cpumMsrWr_AmdK7NodeId,
+    cpumMsrWr_AmdK7DrXAddrMaskN,
+    cpumMsrWr_AmdK7Dr0DataMatchMaybe,
+    cpumMsrWr_AmdK7Dr0DataMaskMaybe,
+    cpumMsrWr_AmdK7LoadStoreCfg,
+    cpumMsrWr_AmdK7InstrCacheCfg,
+    cpumMsrWr_AmdK7DataCacheCfg,
+    cpumMsrWr_AmdK7BusUnitCfg,
+    cpumMsrWr_AmdK7DebugCtl2Maybe,
+    cpumMsrWr_AmdFam15hFpuCfg,
+    cpumMsrWr_AmdFam15hDecoderCfg,
+    cpumMsrWr_AmdFam10hBusUnitCfg2,
+    cpumMsrWr_AmdFam15hCombUnitCfg,
+    cpumMsrWr_AmdFam15hCombUnitCfg2,
+    cpumMsrWr_AmdFam15hCombUnitCfg3,
+    cpumMsrWr_AmdFam15hExecUnitCfg,
+    cpumMsrWr_AmdFam15hLoadStoreCfg2,
+    cpumMsrWr_AmdFam10hIbsFetchCtl,
+    cpumMsrWr_AmdFam10hIbsFetchLinAddr,
+    cpumMsrWr_AmdFam10hIbsFetchPhysAddr,
+    cpumMsrWr_AmdFam10hIbsOpExecCtl,
+    cpumMsrWr_AmdFam10hIbsOpRip,
+    cpumMsrWr_AmdFam10hIbsOpData,
+    cpumMsrWr_AmdFam10hIbsOpData2,
+    cpumMsrWr_AmdFam10hIbsOpData3,
+    cpumMsrWr_AmdFam10hIbsDcLinAddr,
+    cpumMsrWr_AmdFam10hIbsDcPhysAddr,
+    cpumMsrWr_AmdFam10hIbsCtl,
+    cpumMsrWr_AmdFam14hIbsBrTarget,
+
+    cpumMsrWr_Gim
+};
+
+
+/**
+ * Looks up the range for the given MSR.
+ *
+ * @returns Pointer to the range if found, NULL if not.
+ * @param   pVM                The cross context VM structure.
+ * @param   idMsr              The MSR to look up.
+ */
+# ifndef IN_RING3
+static
+# endif
+PCPUMMSRRANGE cpumLookupMsrRange(PVM pVM, uint32_t idMsr)
+{
+    /*
+     * Binary lookup.
+     */
+    uint32_t        cRanges   = pVM->cpum.s.GuestInfo.cMsrRanges;
+    if (!cRanges)
+        return NULL;
+    PCPUMMSRRANGE   paRanges  = pVM->cpum.s.GuestInfo.CTX_SUFF(paMsrRanges);
+    for (;;)
+    {
+        uint32_t i = cRanges / 2;
+        if (idMsr < paRanges[i].uFirst)
+        {
+            if (i == 0)
+                break;
+            cRanges = i;
+        }
+        else if (idMsr > paRanges[i].uLast)
+        {
+            i++;
+            if (i >= cRanges)
+                break;
+            cRanges -= i;
+            paRanges = &paRanges[i];
+        }
+        else
+        {
+            if (paRanges[i].enmRdFn == kCpumMsrRdFn_MsrAlias)
+                return cpumLookupMsrRange(pVM, paRanges[i].uValue);
+            return &paRanges[i];
+        }
+    }
+
+# ifdef VBOX_STRICT
+    /*
+     * Linear lookup to verify the above binary search.
+     */
+    uint32_t        cLeft = pVM->cpum.s.GuestInfo.cMsrRanges;
+    PCPUMMSRRANGE   pCur  = pVM->cpum.s.GuestInfo.CTX_SUFF(paMsrRanges);
+    while (cLeft-- > 0)
+    {
+        if (idMsr >= pCur->uFirst && idMsr <= pCur->uLast)
+        {
+            AssertFailed();
+            if (pCur->enmRdFn == kCpumMsrRdFn_MsrAlias)
+                return cpumLookupMsrRange(pVM, pCur->uValue);
+            return pCur;
+        }
+        pCur++;
+    }
+# endif
+    return NULL;
+}
+
+
+/**
+ * Query a guest MSR.
+ *
+ * The caller is responsible for checking privilege if the call is the result of
+ * a RDMSR instruction.  We'll do the rest.
+ *
+ * @retval  VINF_SUCCESS on success.
+ * @retval  VINF_CPUM_R3_MSR_READ if the MSR read could not be serviced in the
+ *          current context (raw-mode or ring-0).
+ * @retval  VERR_CPUM_RAISE_GP_0 on failure (invalid MSR), the caller is
+ *          expected to take the appropriate actions. @a *puValue is set to 0.
+ * @param   pVCpu               The cross context virtual CPU structure.
+ * @param   idMsr               The MSR.
+ * @param   puValue             Where to return the value.
+ *
+ * @remarks This will always return the right values, even when we're in the
+ *          recompiler.
+ */
+VMMDECL(VBOXSTRICTRC) CPUMQueryGuestMsr(PVMCPUCC pVCpu, uint32_t idMsr, uint64_t *puValue)
+{
+    *puValue = 0;
+
+    VBOXSTRICTRC    rcStrict;
+    PVM             pVM    = pVCpu->CTX_SUFF(pVM);
+    PCPUMMSRRANGE   pRange = cpumLookupMsrRange(pVM, idMsr);
+    if (pRange)
+    {
+        CPUMMSRRDFN  enmRdFn = (CPUMMSRRDFN)pRange->enmRdFn;
+        AssertReturn(enmRdFn > kCpumMsrRdFn_Invalid && enmRdFn < kCpumMsrRdFn_End, VERR_CPUM_IPE_1);
+
+        PFNCPUMRDMSR pfnRdMsr = g_aCpumRdMsrFns[enmRdFn];
+        AssertReturn(pfnRdMsr, VERR_CPUM_IPE_2);
+
+        STAM_COUNTER_INC(&pRange->cReads);
+        STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrReads);
+
+        rcStrict = pfnRdMsr(pVCpu, idMsr, pRange, puValue);
+        if (rcStrict == VINF_SUCCESS)
+            Log2(("CPUM: RDMSR %#x (%s) -> %#llx\n", idMsr, pRange->szName, *puValue));
+        else if (rcStrict == VERR_CPUM_RAISE_GP_0)
+        {
+            Log(("CPUM: RDMSR %#x (%s) -> #GP(0)\n", idMsr, pRange->szName));
+            STAM_COUNTER_INC(&pRange->cGps);
+            STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrReadsRaiseGp);
+        }
+#ifndef IN_RING3
+        else if (rcStrict == VINF_CPUM_R3_MSR_READ)
+            Log(("CPUM: RDMSR %#x (%s) -> ring-3\n", idMsr, pRange->szName));
+#endif
+        else
+        {
+            Log(("CPUM: RDMSR %#x (%s) -> rcStrict=%Rrc\n", idMsr, pRange->szName, VBOXSTRICTRC_VAL(rcStrict)));
+            AssertMsgStmt(RT_FAILURE_NP(rcStrict), ("%Rrc idMsr=%#x\n", VBOXSTRICTRC_VAL(rcStrict), idMsr),
+                          rcStrict = VERR_IPE_UNEXPECTED_INFO_STATUS);
+            Assert(rcStrict != VERR_EM_INTERPRETER);
+        }
+    }
+    else
+    {
+        Log(("CPUM: Unknown RDMSR %#x -> #GP(0)\n", idMsr));
+        STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrReads);
+        STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrReadsUnknown);
+        rcStrict = VERR_CPUM_RAISE_GP_0;
+    }
+    return rcStrict;
+}
+
+
+/**
+ * Writes to a guest MSR.
+ *
+ * The caller is responsible for checking privilege if the call is the result of
+ * a WRMSR instruction.  We'll do the rest.
+ *
+ * @retval  VINF_SUCCESS on success.
+ * @retval  VINF_CPUM_R3_MSR_WRITE if the MSR write could not be serviced in the
+ *          current context (raw-mode or ring-0).
+ * @retval  VERR_CPUM_RAISE_GP_0 on failure, the caller is expected to take the
+ *          appropriate actions.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ * @param   idMsr       The MSR id.
+ * @param   uValue      The value to set.
+ *
+ * @remarks Everyone changing MSR values, including the recompiler, shall do it
+ *          by calling this method.  This makes sure we have current values and
+ *          that we trigger all the right actions when something changes.
+ *
+ *          For performance reasons, this actually isn't entirely true for some
+ *          MSRs when in HM mode.  The code here and in HM must be aware of
+ *          this.
+ */
+VMMDECL(VBOXSTRICTRC) CPUMSetGuestMsr(PVMCPUCC pVCpu, uint32_t idMsr, uint64_t uValue)
+{
+    VBOXSTRICTRC    rcStrict;
+    PVM             pVM    = pVCpu->CTX_SUFF(pVM);
+    PCPUMMSRRANGE   pRange = cpumLookupMsrRange(pVM, idMsr);
+    if (pRange)
+    {
+        STAM_COUNTER_INC(&pRange->cWrites);
+        STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrWrites);
+
+        if (!(uValue & pRange->fWrGpMask))
+        {
+            CPUMMSRWRFN  enmWrFn = (CPUMMSRWRFN)pRange->enmWrFn;
+            AssertReturn(enmWrFn > kCpumMsrWrFn_Invalid && enmWrFn < kCpumMsrWrFn_End, VERR_CPUM_IPE_1);
+
+            PFNCPUMWRMSR pfnWrMsr = g_aCpumWrMsrFns[enmWrFn];
+            AssertReturn(pfnWrMsr, VERR_CPUM_IPE_2);
+
+            uint64_t uValueAdjusted = uValue & ~pRange->fWrIgnMask;
+            if (uValueAdjusted != uValue)
+            {
+                STAM_COUNTER_INC(&pRange->cIgnoredBits);
+                STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrWritesToIgnoredBits);
+            }
+
+            rcStrict = pfnWrMsr(pVCpu, idMsr, pRange, uValueAdjusted, uValue);
+            if (rcStrict == VINF_SUCCESS)
+                Log2(("CPUM: WRMSR %#x (%s), %#llx [%#llx]\n", idMsr, pRange->szName, uValueAdjusted, uValue));
+            else if (rcStrict == VERR_CPUM_RAISE_GP_0)
+            {
+                Log(("CPUM: WRMSR %#x (%s), %#llx [%#llx] -> #GP(0)\n", idMsr, pRange->szName, uValueAdjusted, uValue));
+                STAM_COUNTER_INC(&pRange->cGps);
+                STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrWritesRaiseGp);
+            }
+#ifndef IN_RING3
+            else if (rcStrict == VINF_CPUM_R3_MSR_WRITE)
+                Log(("CPUM: WRMSR %#x (%s), %#llx [%#llx] -> ring-3\n", idMsr, pRange->szName, uValueAdjusted, uValue));
+#endif
+            else
+            {
+                Log(("CPUM: WRMSR %#x (%s), %#llx [%#llx] -> rcStrict=%Rrc\n",
+                     idMsr, pRange->szName, uValueAdjusted, uValue, VBOXSTRICTRC_VAL(rcStrict)));
+                AssertMsgStmt(RT_FAILURE_NP(rcStrict), ("%Rrc idMsr=%#x\n", VBOXSTRICTRC_VAL(rcStrict), idMsr),
+                              rcStrict = VERR_IPE_UNEXPECTED_INFO_STATUS);
+                Assert(rcStrict != VERR_EM_INTERPRETER);
+            }
+        }
+        else
+        {
+            Log(("CPUM: WRMSR %#x (%s), %#llx -> #GP(0) - invalid bits %#llx\n",
+                 idMsr, pRange->szName, uValue, uValue & pRange->fWrGpMask));
+            STAM_COUNTER_INC(&pRange->cGps);
+            STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrWritesRaiseGp);
+            rcStrict = VERR_CPUM_RAISE_GP_0;
+        }
+    }
+    else
+    {
+        Log(("CPUM: Unknown WRMSR %#x, %#llx -> #GP(0)\n", idMsr, uValue));
+        STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrWrites);
+        STAM_REL_COUNTER_INC(&pVM->cpum.s.cMsrWritesUnknown);
+        rcStrict = VERR_CPUM_RAISE_GP_0;
+    }
+    return rcStrict;
+}
+
+
+#if defined(VBOX_STRICT) && defined(IN_RING3)
+/**
+ * Performs some checks on the static data related to MSRs.
+ *
+ * @returns VINF_SUCCESS on success, error on failure.
+ */
+int cpumR3MsrStrictInitChecks(void)
+{
+#define CPUM_ASSERT_RD_MSR_FN(a_Register) \
+        AssertReturn(g_aCpumRdMsrFns[kCpumMsrRdFn_##a_Register] == cpumMsrRd_##a_Register, VERR_CPUM_IPE_2);
+#define CPUM_ASSERT_WR_MSR_FN(a_Register) \
+        AssertReturn(g_aCpumWrMsrFns[kCpumMsrWrFn_##a_Register] == cpumMsrWr_##a_Register, VERR_CPUM_IPE_2);
+
+    AssertReturn(g_aCpumRdMsrFns[kCpumMsrRdFn_Invalid] == NULL, VERR_CPUM_IPE_2);
+    CPUM_ASSERT_RD_MSR_FN(FixedValue);
+    CPUM_ASSERT_RD_MSR_FN(WriteOnly);
+    CPUM_ASSERT_RD_MSR_FN(Ia32P5McAddr);
+    CPUM_ASSERT_RD_MSR_FN(Ia32P5McType);
+    CPUM_ASSERT_RD_MSR_FN(Ia32TimestampCounter);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PlatformId);
+    CPUM_ASSERT_RD_MSR_FN(Ia32ApicBase);
+    CPUM_ASSERT_RD_MSR_FN(Ia32FeatureControl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32BiosSignId);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SmmMonitorCtl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PmcN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MonitorFilterLineSize);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MPerf);
+    CPUM_ASSERT_RD_MSR_FN(Ia32APerf);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MtrrCap);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MtrrPhysBaseN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MtrrPhysMaskN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MtrrFixed);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MtrrDefType);
+    CPUM_ASSERT_RD_MSR_FN(Ia32Pat);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SysEnterCs);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SysEnterEsp);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SysEnterEip);
+    CPUM_ASSERT_RD_MSR_FN(Ia32McgCap);
+    CPUM_ASSERT_RD_MSR_FN(Ia32McgStatus);
+    CPUM_ASSERT_RD_MSR_FN(Ia32McgCtl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32DebugCtl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SmrrPhysBase);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SmrrPhysMask);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PlatformDcaCap);
+    CPUM_ASSERT_RD_MSR_FN(Ia32CpuDcaCap);
+    CPUM_ASSERT_RD_MSR_FN(Ia32Dca0Cap);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfEvtSelN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfStatus);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfCtl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32FixedCtrN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfCapabilities);
+    CPUM_ASSERT_RD_MSR_FN(Ia32FixedCtrCtrl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfGlobalStatus);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfGlobalCtrl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PerfGlobalOvfCtrl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32PebsEnable);
+    CPUM_ASSERT_RD_MSR_FN(Ia32ClockModulation);
+    CPUM_ASSERT_RD_MSR_FN(Ia32ThermInterrupt);
+    CPUM_ASSERT_RD_MSR_FN(Ia32ThermStatus);
+    CPUM_ASSERT_RD_MSR_FN(Ia32MiscEnable);
+    CPUM_ASSERT_RD_MSR_FN(Ia32McCtlStatusAddrMiscN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32McNCtl2);
+    CPUM_ASSERT_RD_MSR_FN(Ia32DsArea);
+    CPUM_ASSERT_RD_MSR_FN(Ia32TscDeadline);
+    CPUM_ASSERT_RD_MSR_FN(Ia32X2ApicN);
+    CPUM_ASSERT_RD_MSR_FN(Ia32DebugInterface);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxBasic);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxPinbasedCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxProcbasedCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxExitCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxEntryCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxMisc);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxCr0Fixed0);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxCr0Fixed1);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxCr4Fixed0);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxCr4Fixed1);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxVmcsEnum);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxProcBasedCtls2);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxEptVpidCap);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxTruePinbasedCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxTrueProcbasedCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxTrueExitCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxTrueEntryCtls);
+    CPUM_ASSERT_RD_MSR_FN(Ia32VmxVmFunc);
+    CPUM_ASSERT_RD_MSR_FN(Ia32SpecCtrl);
+    CPUM_ASSERT_RD_MSR_FN(Ia32ArchCapabilities);
+
+    CPUM_ASSERT_RD_MSR_FN(Amd64Efer);
+    CPUM_ASSERT_RD_MSR_FN(Amd64SyscallTarget);
+    CPUM_ASSERT_RD_MSR_FN(Amd64LongSyscallTarget);
+    CPUM_ASSERT_RD_MSR_FN(Amd64CompSyscallTarget);
+    CPUM_ASSERT_RD_MSR_FN(Amd64SyscallFlagMask);
+    CPUM_ASSERT_RD_MSR_FN(Amd64FsBase);
+    CPUM_ASSERT_RD_MSR_FN(Amd64GsBase);
+    CPUM_ASSERT_RD_MSR_FN(Amd64KernelGsBase);
+    CPUM_ASSERT_RD_MSR_FN(Amd64TscAux);
+
+    CPUM_ASSERT_RD_MSR_FN(IntelEblCrPowerOn);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7CoreThreadCount);
+    CPUM_ASSERT_RD_MSR_FN(IntelP4EbcHardPowerOn);
+    CPUM_ASSERT_RD_MSR_FN(IntelP4EbcSoftPowerOn);
+    CPUM_ASSERT_RD_MSR_FN(IntelP4EbcFrequencyId);
+    CPUM_ASSERT_RD_MSR_FN(IntelP6FsbFrequency);
+    CPUM_ASSERT_RD_MSR_FN(IntelPlatformInfo);
+    CPUM_ASSERT_RD_MSR_FN(IntelFlexRatio);
+    CPUM_ASSERT_RD_MSR_FN(IntelPkgCStConfigControl);
+    CPUM_ASSERT_RD_MSR_FN(IntelPmgIoCaptureBase);
+    CPUM_ASSERT_RD_MSR_FN(IntelLastBranchFromToN);
+    CPUM_ASSERT_RD_MSR_FN(IntelLastBranchFromN);
+    CPUM_ASSERT_RD_MSR_FN(IntelLastBranchToN);
+    CPUM_ASSERT_RD_MSR_FN(IntelLastBranchTos);
+    CPUM_ASSERT_RD_MSR_FN(IntelBblCrCtl);
+    CPUM_ASSERT_RD_MSR_FN(IntelBblCrCtl3);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7TemperatureTarget);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7MsrOffCoreResponseN);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7MiscPwrMgmt);
+    CPUM_ASSERT_RD_MSR_FN(IntelP6CrN);
+    CPUM_ASSERT_RD_MSR_FN(IntelCpuId1FeatureMaskEcdx);
+    CPUM_ASSERT_RD_MSR_FN(IntelCpuId1FeatureMaskEax);
+    CPUM_ASSERT_RD_MSR_FN(IntelCpuId80000001FeatureMaskEcdx);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyAesNiCtl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7TurboRatioLimit);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7LbrSelect);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyErrorControl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7VirtualLegacyWireCap);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7PowerCtl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyPebsNumAlt);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7PebsLdLat);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7PkgCnResidencyN);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7CoreCnResidencyN);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyVrCurrentConfig);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyVrMiscConfig);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyRaplPowerUnit);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyPkgCnIrtlN);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SandyPkgC2Residency);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPkgPowerLimit);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPkgEnergyStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPkgPerfStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPkgPowerInfo);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplDramPowerLimit);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplDramEnergyStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplDramPerfStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplDramPowerInfo);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp0PowerLimit);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp0EnergyStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp0Policy);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp0PerfStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp1PowerLimit);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp1EnergyStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7RaplPp1Policy);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7IvyConfigTdpNominal);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7IvyConfigTdpLevel1);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7IvyConfigTdpLevel2);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7IvyConfigTdpControl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7IvyTurboActivationRatio);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncPerfGlobalCtrl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncPerfGlobalStatus);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncPerfGlobalOvfCtrl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncPerfFixedCtrCtrl);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncPerfFixedCtr);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncCBoxConfig);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncArbPerfCtrN);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7UncArbPerfEvtSelN);
+    CPUM_ASSERT_RD_MSR_FN(IntelI7SmiCount);
+    CPUM_ASSERT_RD_MSR_FN(IntelCore2EmttmCrTablesN);
+    CPUM_ASSERT_RD_MSR_FN(IntelCore2SmmCStMiscInfo);
+    CPUM_ASSERT_RD_MSR_FN(IntelCore1ExtConfig);
+    CPUM_ASSERT_RD_MSR_FN(IntelCore1DtsCalControl);
+    CPUM_ASSERT_RD_MSR_FN(IntelCore2PeciControl);
+    CPUM_ASSERT_RD_MSR_FN(IntelAtSilvCoreC1Recidency);
+
+    CPUM_ASSERT_RD_MSR_FN(P6LastBranchFromIp);
+    CPUM_ASSERT_RD_MSR_FN(P6LastBranchToIp);
+    CPUM_ASSERT_RD_MSR_FN(P6LastIntFromIp);
+    CPUM_ASSERT_RD_MSR_FN(P6LastIntToIp);
+
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hTscRate);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hLwpCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hLwpCbAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hMc4MiscN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8PerfCtlN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8PerfCtrN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SysCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8HwCr);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8IorrBaseN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8IorrMaskN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8TopOfMemN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8NbCfg1);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8McXcptRedir);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8CpuNameN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8HwThermalCtrl);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SwThermalCtrl);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8FidVidControl);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8FidVidStatus);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8McCtlMaskN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmiOnIoTrapN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmiOnIoTrapCtlSts);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8IntPendingMessage);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmiTriggerIoCycle);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hMmioCfgBaseAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hTrapCtlMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hPStateCurLimit);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hPStateControl);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hPStateStatus);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hPStateN);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hCofVidControl);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hCofVidStatus);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hCStateIoBaseAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hCpuWatchdogTimer);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmmBase);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmmAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmmMask);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8VmCr);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8IgnNe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8SmmCtl);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8VmHSavePa);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hVmLockKey);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hSmmLockKey);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hLocalSmiStatus);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hOsVisWrkIdLength);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hOsVisWrkStatus);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam16hL2IPerfCtlN);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam16hL2IPerfCtrN);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hNorthbridgePerfCtlN);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hNorthbridgePerfCtrN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7MicrocodeCtl);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7ClusterIdMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8CpuIdCtlStd07hEbax);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8CpuIdCtlStd06hEcx);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8CpuIdCtlStd01hEdcx);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8CpuIdCtlExt01hEdcx);
+    CPUM_ASSERT_RD_MSR_FN(AmdK8PatchLevel);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7DebugStatusMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7BHTraceBaseMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7BHTracePtrMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7BHTraceLimitMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7HardwareDebugToolCfgMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7FastFlushCountMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7NodeId);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7DrXAddrMaskN);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7Dr0DataMatchMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7Dr0DataMaskMaybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7LoadStoreCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7InstrCacheCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7DataCacheCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7BusUnitCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdK7DebugCtl2Maybe);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hFpuCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hDecoderCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hBusUnitCfg2);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hCombUnitCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hCombUnitCfg2);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hCombUnitCfg3);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hExecUnitCfg);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam15hLoadStoreCfg2);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsFetchCtl);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsFetchLinAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsFetchPhysAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsOpExecCtl);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsOpRip);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsOpData);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsOpData2);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsOpData3);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsDcLinAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsDcPhysAddr);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam10hIbsCtl);
+    CPUM_ASSERT_RD_MSR_FN(AmdFam14hIbsBrTarget);
+
+    CPUM_ASSERT_RD_MSR_FN(Gim)
+
+    AssertReturn(g_aCpumWrMsrFns[kCpumMsrWrFn_Invalid] == NULL, VERR_CPUM_IPE_2);
+    CPUM_ASSERT_WR_MSR_FN(Ia32P5McAddr);
+    CPUM_ASSERT_WR_MSR_FN(Ia32P5McType);
+    CPUM_ASSERT_WR_MSR_FN(Ia32TimestampCounter);
+    CPUM_ASSERT_WR_MSR_FN(Ia32ApicBase);
+    CPUM_ASSERT_WR_MSR_FN(Ia32FeatureControl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32BiosSignId);
+    CPUM_ASSERT_WR_MSR_FN(Ia32BiosUpdateTrigger);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SmmMonitorCtl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PmcN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MonitorFilterLineSize);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MPerf);
+    CPUM_ASSERT_WR_MSR_FN(Ia32APerf);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MtrrPhysBaseN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MtrrPhysMaskN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MtrrFixed);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MtrrDefType);
+    CPUM_ASSERT_WR_MSR_FN(Ia32Pat);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SysEnterCs);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SysEnterEsp);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SysEnterEip);
+    CPUM_ASSERT_WR_MSR_FN(Ia32McgStatus);
+    CPUM_ASSERT_WR_MSR_FN(Ia32McgCtl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32DebugCtl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SmrrPhysBase);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SmrrPhysMask);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PlatformDcaCap);
+    CPUM_ASSERT_WR_MSR_FN(Ia32Dca0Cap);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfEvtSelN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfStatus);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfCtl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32FixedCtrN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfCapabilities);
+    CPUM_ASSERT_WR_MSR_FN(Ia32FixedCtrCtrl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfGlobalStatus);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfGlobalCtrl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PerfGlobalOvfCtrl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PebsEnable);
+    CPUM_ASSERT_WR_MSR_FN(Ia32ClockModulation);
+    CPUM_ASSERT_WR_MSR_FN(Ia32ThermInterrupt);
+    CPUM_ASSERT_WR_MSR_FN(Ia32ThermStatus);
+    CPUM_ASSERT_WR_MSR_FN(Ia32MiscEnable);
+    CPUM_ASSERT_WR_MSR_FN(Ia32McCtlStatusAddrMiscN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32McNCtl2);
+    CPUM_ASSERT_WR_MSR_FN(Ia32DsArea);
+    CPUM_ASSERT_WR_MSR_FN(Ia32TscDeadline);
+    CPUM_ASSERT_WR_MSR_FN(Ia32X2ApicN);
+    CPUM_ASSERT_WR_MSR_FN(Ia32DebugInterface);
+    CPUM_ASSERT_WR_MSR_FN(Ia32SpecCtrl);
+    CPUM_ASSERT_WR_MSR_FN(Ia32PredCmd);
+    CPUM_ASSERT_WR_MSR_FN(Ia32FlushCmd);
+
+    CPUM_ASSERT_WR_MSR_FN(Amd64Efer);
+    CPUM_ASSERT_WR_MSR_FN(Amd64SyscallTarget);
+    CPUM_ASSERT_WR_MSR_FN(Amd64LongSyscallTarget);
+    CPUM_ASSERT_WR_MSR_FN(Amd64CompSyscallTarget);
+    CPUM_ASSERT_WR_MSR_FN(Amd64SyscallFlagMask);
+    CPUM_ASSERT_WR_MSR_FN(Amd64FsBase);
+    CPUM_ASSERT_WR_MSR_FN(Amd64GsBase);
+    CPUM_ASSERT_WR_MSR_FN(Amd64KernelGsBase);
+    CPUM_ASSERT_WR_MSR_FN(Amd64TscAux);
+
+    CPUM_ASSERT_WR_MSR_FN(IntelEblCrPowerOn);
+    CPUM_ASSERT_WR_MSR_FN(IntelP4EbcHardPowerOn);
+    CPUM_ASSERT_WR_MSR_FN(IntelP4EbcSoftPowerOn);
+    CPUM_ASSERT_WR_MSR_FN(IntelP4EbcFrequencyId);
+    CPUM_ASSERT_WR_MSR_FN(IntelFlexRatio);
+    CPUM_ASSERT_WR_MSR_FN(IntelPkgCStConfigControl);
+    CPUM_ASSERT_WR_MSR_FN(IntelPmgIoCaptureBase);
+    CPUM_ASSERT_WR_MSR_FN(IntelLastBranchFromToN);
+    CPUM_ASSERT_WR_MSR_FN(IntelLastBranchFromN);
+    CPUM_ASSERT_WR_MSR_FN(IntelLastBranchToN);
+    CPUM_ASSERT_WR_MSR_FN(IntelLastBranchTos);
+    CPUM_ASSERT_WR_MSR_FN(IntelBblCrCtl);
+    CPUM_ASSERT_WR_MSR_FN(IntelBblCrCtl3);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7TemperatureTarget);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7MsrOffCoreResponseN);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7MiscPwrMgmt);
+    CPUM_ASSERT_WR_MSR_FN(IntelP6CrN);
+    CPUM_ASSERT_WR_MSR_FN(IntelCpuId1FeatureMaskEcdx);
+    CPUM_ASSERT_WR_MSR_FN(IntelCpuId1FeatureMaskEax);
+    CPUM_ASSERT_WR_MSR_FN(IntelCpuId80000001FeatureMaskEcdx);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyAesNiCtl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7TurboRatioLimit);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7LbrSelect);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyErrorControl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7PowerCtl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyPebsNumAlt);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7PebsLdLat);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyVrCurrentConfig);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyVrMiscConfig);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyPkgCnIrtlN);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7SandyPkgC2Residency);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7RaplPkgPowerLimit);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7RaplDramPowerLimit);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7RaplPp0PowerLimit);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7RaplPp0Policy);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7RaplPp1PowerLimit);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7RaplPp1Policy);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7IvyConfigTdpControl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7IvyTurboActivationRatio);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncPerfGlobalCtrl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncPerfGlobalStatus);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncPerfGlobalOvfCtrl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncPerfFixedCtrCtrl);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncPerfFixedCtr);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncArbPerfCtrN);
+    CPUM_ASSERT_WR_MSR_FN(IntelI7UncArbPerfEvtSelN);
+    CPUM_ASSERT_WR_MSR_FN(IntelCore2EmttmCrTablesN);
+    CPUM_ASSERT_WR_MSR_FN(IntelCore2SmmCStMiscInfo);
+    CPUM_ASSERT_WR_MSR_FN(IntelCore1ExtConfig);
+    CPUM_ASSERT_WR_MSR_FN(IntelCore1DtsCalControl);
+    CPUM_ASSERT_WR_MSR_FN(IntelCore2PeciControl);
+
+    CPUM_ASSERT_WR_MSR_FN(P6LastIntFromIp);
+    CPUM_ASSERT_WR_MSR_FN(P6LastIntToIp);
+
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hTscRate);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hLwpCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hLwpCbAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hMc4MiscN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8PerfCtlN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8PerfCtrN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SysCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8HwCr);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8IorrBaseN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8IorrMaskN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8TopOfMemN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8NbCfg1);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8McXcptRedir);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8CpuNameN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8HwThermalCtrl);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SwThermalCtrl);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8FidVidControl);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8McCtlMaskN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmiOnIoTrapN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmiOnIoTrapCtlSts);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8IntPendingMessage);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmiTriggerIoCycle);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hMmioCfgBaseAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hTrapCtlMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hPStateControl);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hPStateStatus);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hPStateN);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hCofVidControl);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hCofVidStatus);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hCStateIoBaseAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hCpuWatchdogTimer);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmmBase);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmmAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmmMask);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8VmCr);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8IgnNe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8SmmCtl);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8VmHSavePa);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hVmLockKey);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hSmmLockKey);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hLocalSmiStatus);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hOsVisWrkIdLength);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hOsVisWrkStatus);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam16hL2IPerfCtlN);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam16hL2IPerfCtrN);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hNorthbridgePerfCtlN);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hNorthbridgePerfCtrN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7MicrocodeCtl);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7ClusterIdMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8CpuIdCtlStd07hEbax);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8CpuIdCtlStd06hEcx);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8CpuIdCtlStd01hEdcx);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8CpuIdCtlExt01hEdcx);
+    CPUM_ASSERT_WR_MSR_FN(AmdK8PatchLoader);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7DebugStatusMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7BHTraceBaseMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7BHTracePtrMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7BHTraceLimitMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7HardwareDebugToolCfgMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7FastFlushCountMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7NodeId);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7DrXAddrMaskN);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7Dr0DataMatchMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7Dr0DataMaskMaybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7LoadStoreCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7InstrCacheCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7DataCacheCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7BusUnitCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdK7DebugCtl2Maybe);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hFpuCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hDecoderCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hBusUnitCfg2);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hCombUnitCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hCombUnitCfg2);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hCombUnitCfg3);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hExecUnitCfg);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam15hLoadStoreCfg2);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsFetchCtl);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsFetchLinAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsFetchPhysAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsOpExecCtl);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsOpRip);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsOpData);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsOpData2);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsOpData3);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsDcLinAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsDcPhysAddr);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam10hIbsCtl);
+    CPUM_ASSERT_WR_MSR_FN(AmdFam14hIbsBrTarget);
+
+    CPUM_ASSERT_WR_MSR_FN(Gim);
+
+    return VINF_SUCCESS;
+}
+#endif /* VBOX_STRICT && IN_RING3 */
+
+
+/**
+ * Gets the scalable bus frequency.
+ *
+ * The bus frequency is used as a base in several MSRs that gives the CPU and
+ * other frequency ratios.
+ *
+ * @returns Scalable bus frequency in Hz. Will not return CPUM_SBUSFREQ_UNKNOWN.
+ * @param   pVM                 The cross context VM structure.
+ */
+VMMDECL(uint64_t) CPUMGetGuestScalableBusFrequency(PVM pVM)
+{
+    uint64_t uFreq = pVM->cpum.s.GuestInfo.uScalableBusFreq;
+    if (uFreq == CPUM_SBUSFREQ_UNKNOWN)
+        uFreq = CPUM_SBUSFREQ_100MHZ;
+    return uFreq;
+}
+
+
+/**
+ * Sets the guest EFER MSR without performing any additional checks.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure of the calling EMT.
+ * @param   uOldEfer    The previous EFER MSR value.
+ * @param   uValidEfer  The new, validated EFER MSR value.
+ *
+ * @remarks One would normally call CPUMIsGuestEferMsrWriteValid() before calling
+ *          this function to change the EFER in order to perform an EFER transition.
+ */
+VMMDECL(void) CPUMSetGuestEferMsrNoChecks(PVMCPUCC pVCpu, uint64_t uOldEfer, uint64_t uValidEfer)
+{
+    pVCpu->cpum.s.Guest.msrEFER = uValidEfer;
+
+    /* AMD64 Architecture Programmer's Manual: 15.15 TLB Control; flush the TLB
+       if MSR_K6_EFER_NXE, MSR_K6_EFER_LME or MSR_K6_EFER_LMA are changed. */
+    if (   (uOldEfer                    & (MSR_K6_EFER_NXE | MSR_K6_EFER_LME | MSR_K6_EFER_LMA))
+        != (pVCpu->cpum.s.Guest.msrEFER & (MSR_K6_EFER_NXE | MSR_K6_EFER_LME | MSR_K6_EFER_LMA)))
+    {
+        /// @todo PGMFlushTLB(pVCpu, cr3, true /*fGlobal*/);
+        HMFlushTlb(pVCpu);
+
+        /* Notify PGM about NXE changes. */
+        if (   (uOldEfer                    & MSR_K6_EFER_NXE)
+            != (pVCpu->cpum.s.Guest.msrEFER & MSR_K6_EFER_NXE))
+            PGMNotifyNxeChanged(pVCpu, !(uOldEfer & MSR_K6_EFER_NXE));
+    }
+}
+
+
+/**
+ * Checks if a guest PAT MSR write is valid.
+ *
+ * @returns @c true if the PAT bit combination is valid, @c false otherwise.
+ * @param   uValue      The PAT MSR value.
+ */
+VMMDECL(bool) CPUMIsPatMsrValid(uint64_t uValue)
+{
+    for (uint32_t cShift = 0; cShift < 63; cShift += 8)
+    {
+        /* Check all eight bits because the top 5 bits of each byte are reserved. */
+        uint8_t uType = (uint8_t)(uValue >> cShift);
+        if ((uType >= 8) || (uType == 2) || (uType == 3))
+        {
+            Log(("CPUM: Invalid PAT type at %u:%u in IA32_PAT: %#llx (%#llx)\n", cShift + 7, cShift, uValue, uType));
+            return false;
+        }
+    }
+    return true;
+}
+
+
+/**
+ * Validates an EFER MSR write and provides the new, validated EFER MSR.
+ *
+ * @returns VBox status code.
+ * @param   pVM             The cross context VM structure.
+ * @param   uCr0            The CR0 of the CPU corresponding to the EFER MSR.
+ * @param   uOldEfer        Value of the previous EFER MSR on the CPU if any.
+ * @param   uNewEfer        The new EFER MSR value being written.
+ * @param   puValidEfer     Where to store the validated EFER (only updated if
+ *                          this function returns VINF_SUCCESS).
+ */
+VMMDECL(int) CPUMIsGuestEferMsrWriteValid(PVM pVM, uint64_t uCr0, uint64_t uOldEfer, uint64_t uNewEfer, uint64_t *puValidEfer)
+{
+    /* #GP(0) If anything outside the allowed bits is set. */
+    uint64_t fMask = CPUMGetGuestEferMsrValidMask(pVM);
+    if (uNewEfer & ~fMask)
+    {
+        Log(("CPUM: Settings disallowed EFER bit. uNewEfer=%#RX64 fAllowed=%#RX64 -> #GP(0)\n", uNewEfer, fMask));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    /* Check for illegal MSR_K6_EFER_LME transitions: not allowed to change LME if
+       paging is enabled. (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
+    if (   (uOldEfer & MSR_K6_EFER_LME) != (uNewEfer & MSR_K6_EFER_LME)
+        && (uCr0 & X86_CR0_PG))
+    {
+        Log(("CPUM: Illegal MSR_K6_EFER_LME change: paging is enabled!!\n"));
+        return VERR_CPUM_RAISE_GP_0;
+    }
+
+    /* There are a few more: e.g. MSR_K6_EFER_LMSLE. */
+    AssertMsg(!(uNewEfer & ~(  MSR_K6_EFER_NXE
+                             | MSR_K6_EFER_LME
+                             | MSR_K6_EFER_LMA /* ignored anyway */
+                             | MSR_K6_EFER_SCE
+                             | MSR_K6_EFER_FFXSR
+                             | MSR_K6_EFER_SVME)),
+              ("Unexpected value %#RX64\n", uNewEfer));
+
+    /* Ignore EFER.LMA, it's updated when setting CR0. */
+    fMask &= ~MSR_K6_EFER_LMA;
+
+    *puValidEfer = (uOldEfer & ~fMask) | (uNewEfer & fMask);
+    return VINF_SUCCESS;
+}
+
+
+/**
+ * Gets the mask of valid EFER bits depending on supported guest-CPU features.
+ *
+ * @returns Mask of valid EFER bits.
+ * @param   pVM     The cross context VM structure.
+ *
+ * @remarks EFER.LMA is included as part of the valid mask. It's not invalid but
+ *          rather a read-only bit.
+ */
+VMMDECL(uint64_t) CPUMGetGuestEferMsrValidMask(PVM pVM)
+{
+    uint32_t const  fExtFeatures = pVM->cpum.s.aGuestCpuIdPatmExt[0].uEax >= 0x80000001
+                                 ? pVM->cpum.s.aGuestCpuIdPatmExt[1].uEdx
+                                 : 0;
+    uint64_t        fMask        = 0;
+    uint64_t const  fIgnoreMask  = MSR_K6_EFER_LMA;
+
+    /* Filter out those bits the guest is allowed to change. (e.g. LMA is read-only) */
+    if (fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_NX)
+        fMask |= MSR_K6_EFER_NXE;
+    if (fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_LONG_MODE)
+        fMask |= MSR_K6_EFER_LME;
+    if (fExtFeatures & X86_CPUID_EXT_FEATURE_EDX_SYSCALL)
+        fMask |= MSR_K6_EFER_SCE;
+    if (fExtFeatures & X86_CPUID_AMD_FEATURE_EDX_FFXSR)
+        fMask |= MSR_K6_EFER_FFXSR;
+    if (pVM->cpum.s.GuestFeatures.fSvm)
+        fMask |= MSR_K6_EFER_SVME;
+
+    return (fIgnoreMask | fMask);
+}
+
+
+/**
+ * Fast way for HM to access the MSR_K8_TSC_AUX register.
+ *
+ * @returns The register value.
+ * @param   pVCpu   The cross context virtual CPU structure of the calling EMT.
+ * @thread  EMT(pVCpu)
+ */
+VMM_INT_DECL(uint64_t) CPUMGetGuestTscAux(PVMCPUCC pVCpu)
+{
+    Assert(!(pVCpu->cpum.s.Guest.fExtrn & CPUMCTX_EXTRN_TSC_AUX));
+    return pVCpu->cpum.s.GuestMsrs.msr.TscAux;
+}
+
+
+/**
+ * Fast way for HM to access the MSR_K8_TSC_AUX register.
+ *
+ * @param   pVCpu   The cross context virtual CPU structure of the calling EMT.
+ * @param   uValue  The new value.
+ * @thread  EMT(pVCpu)
+ */
+VMM_INT_DECL(void) CPUMSetGuestTscAux(PVMCPUCC pVCpu, uint64_t uValue)
+{
+    pVCpu->cpum.s.Guest.fExtrn &= ~CPUMCTX_EXTRN_TSC_AUX;
+    pVCpu->cpum.s.GuestMsrs.msr.TscAux = uValue;
+}
+
+
+/**
+ * Fast way for HM to access the IA32_SPEC_CTRL register.
+ *
+ * @returns The register value.
+ * @param   pVCpu   The cross context virtual CPU structure of the calling EMT.
+ * @thread  EMT(pVCpu)
+ */
+VMM_INT_DECL(uint64_t) CPUMGetGuestSpecCtrl(PVMCPUCC pVCpu)
+{
+    return pVCpu->cpum.s.GuestMsrs.msr.SpecCtrl;
+}
+
+
+/**
+ * Fast way for HM to access the IA32_SPEC_CTRL register.
+ *
+ * @param   pVCpu   The cross context virtual CPU structure of the calling EMT.
+ * @param   uValue  The new value.
+ * @thread  EMT(pVCpu)
+ */
+VMM_INT_DECL(void) CPUMSetGuestSpecCtrl(PVMCPUCC pVCpu, uint64_t uValue)
+{
+    pVCpu->cpum.s.GuestMsrs.msr.SpecCtrl = uValue;
+}
+