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-rw-r--r--src/VBox/VMM/VMMR3/VMMTests.cpp197
1 files changed, 197 insertions, 0 deletions
diff --git a/src/VBox/VMM/VMMR3/VMMTests.cpp b/src/VBox/VMM/VMMR3/VMMTests.cpp
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--- /dev/null
+++ b/src/VBox/VMM/VMMR3/VMMTests.cpp
@@ -0,0 +1,197 @@
+/* $Id: VMMTests.cpp $ */
+/** @file
+ * VMM - The Virtual Machine Monitor Core, Tests.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+//#define NO_SUPCALLR0VMM
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#define LOG_GROUP LOG_GROUP_VMM
+#include <VBox/vmm/vmm.h>
+#include <VBox/vmm/pdmapi.h>
+#include <VBox/vmm/cpum.h>
+#include <VBox/dbg.h>
+#include <VBox/vmm/hm.h>
+#include <VBox/vmm/mm.h>
+#include <VBox/vmm/trpm.h>
+#include <VBox/vmm/selm.h>
+#include "VMMInternal.h"
+#include <VBox/vmm/vm.h>
+#include <iprt/errcore.h>
+#include <VBox/param.h>
+
+#include <iprt/assert.h>
+#include <iprt/asm.h>
+#include <iprt/time.h>
+#include <iprt/stream.h>
+#include <iprt/string.h>
+#include <iprt/x86.h>
+
+
+#define SYNC_SEL(pHyperCtx, reg) \
+ if (pHyperCtx->reg.Sel) \
+ { \
+ DBGFSELINFO selInfo; \
+ int rc2 = SELMR3GetShadowSelectorInfo(pVM, pHyperCtx->reg.Sel, &selInfo); \
+ AssertRC(rc2); \
+ \
+ pHyperCtx->reg.u64Base = selInfo.GCPtrBase; \
+ pHyperCtx->reg.u32Limit = selInfo.cbLimit; \
+ pHyperCtx->reg.Attr.n.u1Present = selInfo.u.Raw.Gen.u1Present; \
+ pHyperCtx->reg.Attr.n.u1DefBig = selInfo.u.Raw.Gen.u1DefBig; \
+ pHyperCtx->reg.Attr.n.u1Granularity = selInfo.u.Raw.Gen.u1Granularity; \
+ pHyperCtx->reg.Attr.n.u4Type = selInfo.u.Raw.Gen.u4Type; \
+ pHyperCtx->reg.Attr.n.u2Dpl = selInfo.u.Raw.Gen.u2Dpl; \
+ pHyperCtx->reg.Attr.n.u1DescType = selInfo.u.Raw.Gen.u1DescType; \
+ pHyperCtx->reg.Attr.n.u1Long = selInfo.u.Raw.Gen.u1Long; \
+ }
+
+/* execute the switch. */
+VMMR3DECL(int) VMMDoHmTest(PVM pVM)
+{
+#if 1
+ RTPrintf("FIXME!\n");
+ RT_NOREF(pVM);
+ return 0;
+#else
+
+ uint32_t i;
+ int rc;
+ PCPUMCTX pHyperCtx, pGuestCtx;
+ RTGCPHYS CR3Phys = 0x0; /* fake address */
+ PVMCPU pVCpu = &pVM->aCpus[0];
+
+ if (!HMIsEnabled(pVM))
+ {
+ RTPrintf("VMM: Hardware accelerated test not available!\n");
+ return VERR_ACCESS_DENIED;
+ }
+
+ /* Enable mapping of the hypervisor into the shadow page table. */
+ uint32_t cb;
+ rc = PGMR3MappingsSize(pVM, &cb);
+ AssertRCReturn(rc, rc);
+
+ /* Pretend the mappings are now fixed; to force a refresh of the reserved PDEs. */
+ rc = PGMR3MappingsFix(pVM, MM_HYPER_AREA_ADDRESS, cb);
+ AssertRCReturn(rc, rc);
+
+ pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
+
+ pHyperCtx->cr0 = X86_CR0_PE | X86_CR0_WP | X86_CR0_PG | X86_CR0_TS | X86_CR0_ET | X86_CR0_NE | X86_CR0_MP;
+ pHyperCtx->cr4 = X86_CR4_PGE | X86_CR4_OSFXSR | X86_CR4_OSXMMEEXCPT;
+ PGMChangeMode(pVCpu, pHyperCtx->cr0, pHyperCtx->cr4, pHyperCtx->msrEFER);
+ PGMSyncCR3(pVCpu, pHyperCtx->cr0, CR3Phys, pHyperCtx->cr4, true);
+
+ VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
+ VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
+ VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
+ VM_FF_CLEAR(pVM, VM_FF_REQUEST);
+
+ /*
+ * Setup stack for calling VMMRCEntry().
+ */
+ RTRCPTR RCPtrEP;
+ rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "VMMRCEntry", &RCPtrEP);
+ if (RT_SUCCESS(rc))
+ {
+ RTPrintf("VMM: VMMRCEntry=%RRv\n", RCPtrEP);
+
+ pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
+
+ /* Fill in hidden selector registers for the hypervisor state. */
+ SYNC_SEL(pHyperCtx, cs);
+ SYNC_SEL(pHyperCtx, ds);
+ SYNC_SEL(pHyperCtx, es);
+ SYNC_SEL(pHyperCtx, fs);
+ SYNC_SEL(pHyperCtx, gs);
+ SYNC_SEL(pHyperCtx, ss);
+ SYNC_SEL(pHyperCtx, tr);
+
+ /*
+ * Profile switching.
+ */
+ RTPrintf("VMM: profiling switcher...\n");
+ Log(("VMM: profiling switcher...\n"));
+ uint64_t TickMin = UINT64_MAX;
+ uint64_t tsBegin = RTTimeNanoTS();
+ uint64_t TickStart = ASMReadTSC();
+ for (i = 0; i < 1000000; i++)
+ {
+ CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
+ CPUMPushHyper(pVCpu, 0);
+ CPUMPushHyper(pVCpu, VMMRC_DO_TESTCASE_HM_NOP);
+ CPUMPushHyper(pVCpu, pVM->pVMRC);
+ CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
+ CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
+
+ pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
+ pGuestCtx = CPUMQueryGuestCtxPtr(pVCpu);
+
+ /* Copy the hypervisor context to make sure we have a valid guest context. */
+ *pGuestCtx = *pHyperCtx;
+ pGuestCtx->cr3 = CR3Phys;
+
+ VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
+ VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
+ VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
+
+ uint64_t TickThisStart = ASMReadTSC();
+ rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HM_RUN, 0);
+ uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
+ if (RT_FAILURE(rc))
+ {
+ Log(("VMM: R0 returned fatal %Rrc in iteration %d\n", rc, i));
+ VMMR3FatalDump(pVM, pVCpu, rc);
+ return rc;
+ }
+ if (TickThisElapsed < TickMin)
+ TickMin = TickThisElapsed;
+ }
+ uint64_t TickEnd = ASMReadTSC();
+ uint64_t tsEnd = RTTimeNanoTS();
+
+ uint64_t Elapsed = tsEnd - tsBegin;
+ uint64_t PerIteration = Elapsed / (uint64_t)i;
+ uint64_t cTicksElapsed = TickEnd - TickStart;
+ uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
+
+ RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
+ i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
+ Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
+ i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
+
+ rc = VINF_SUCCESS;
+ }
+ else
+ AssertMsgFailed(("Failed to resolved VMMRC.rc::VMMRCEntry(), rc=%Rrc\n", rc));
+
+ return rc;
+#endif
+}
+
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