Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 253 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
new file mode 100644
index 0000000000..9026119542
--- /dev/null
+++ b/arch/powerpc/kvm/Kconfig
@@ -0,0 +1,253 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# KVM configuration
+#
+
+source "virt/kvm/Kconfig"
+
+menuconfig VIRTUALIZATION
+	bool "Virtualization"
+	help
+	  Say Y here to get to see options for using your Linux host to run
+	  other operating systems inside virtual machines (guests).
+	  This option alone does not add any kernel code.
+
+	  If you say N, all options in this submenu will be skipped and
+	  disabled.
+
+if VIRTUALIZATION
+
+config KVM
+	bool
+	select PREEMPT_NOTIFIERS
+	select HAVE_KVM_EVENTFD
+	select HAVE_KVM_VCPU_ASYNC_IOCTL
+	select KVM_VFIO
+	select IRQ_BYPASS_MANAGER
+	select HAVE_KVM_IRQ_BYPASS
+	select INTERVAL_TREE
+
+config KVM_BOOK3S_HANDLER
+	bool
+
+config KVM_BOOK3S_32_HANDLER
+	bool
+	select KVM_BOOK3S_HANDLER
+	select KVM_MMIO
+
+config KVM_BOOK3S_64_HANDLER
+	bool
+	select KVM_BOOK3S_HANDLER
+
+config KVM_BOOK3S_PR_POSSIBLE
+	bool
+	select KVM_MMIO
+	select MMU_NOTIFIER
+
+config KVM_BOOK3S_HV_POSSIBLE
+	bool
+
+config KVM_BOOK3S_32
+	tristate "KVM support for PowerPC book3s_32 processors"
+	depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
+	depends on !CONTEXT_TRACKING_USER
+	select KVM
+	select KVM_BOOK3S_32_HANDLER
+	select KVM_BOOK3S_PR_POSSIBLE
+	select PPC_FPU
+	help
+	  Support running unmodified book3s_32 guest kernels
+	  in virtual machines on book3s_32 host processors.
+
+	  This module provides access to the hardware capabilities through
+	  a character device node named /dev/kvm.
+
+	  If unsure, say N.
+
+config KVM_BOOK3S_64
+	tristate "KVM support for PowerPC book3s_64 processors"
+	depends on PPC_BOOK3S_64
+	select KVM_BOOK3S_64_HANDLER
+	select KVM
+	select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
+	select PPC_64S_HASH_MMU
+	select SPAPR_TCE_IOMMU if IOMMU_SUPPORT && (PPC_PSERIES || PPC_POWERNV)
+	help
+	  Support running unmodified book3s_64 and book3s_32 guest kernels
+	  in virtual machines on book3s_64 host processors.
+
+	  This module provides access to the hardware capabilities through
+	  a character device node named /dev/kvm.
+
+	  If unsure, say N.
+
+config KVM_BOOK3S_64_HV
+	tristate "KVM for POWER7 and later using hypervisor mode in host"
+	depends on KVM_BOOK3S_64 && PPC_POWERNV
+	select KVM_BOOK3S_HV_POSSIBLE
+	select MMU_NOTIFIER
+	select CMA
+	help
+	  Support running unmodified book3s_64 guest kernels in
+	  virtual machines on POWER7 and newer processors that have
+	  hypervisor mode available to the host.
+
+	  If you say Y here, KVM will use the hardware virtualization
+	  facilities of POWER7 (and later) processors, meaning that
+	  guest operating systems will run at full hardware speed
+	  using supervisor and user modes.  However, this also means
+	  that KVM is not usable under PowerVM (pHyp), is only usable
+	  on POWER7 or later processors, and cannot emulate a
+	  different processor from the host processor.
+
+	  If unsure, say N.
+
+config KVM_BOOK3S_64_PR
+	tristate "KVM support without using hypervisor mode in host"
+	depends on KVM_BOOK3S_64
+	depends on !CONTEXT_TRACKING_USER
+	select KVM_BOOK3S_PR_POSSIBLE
+	help
+	  Support running guest kernels in virtual machines on processors
+	  without using hypervisor mode in the host, by running the
+	  guest in user mode (problem state) and emulating all
+	  privileged instructions and registers.
+
+	  This is only available for hash MMU mode and only supports
+	  guests that use hash MMU mode.
+
+	  This is not as fast as using hypervisor mode, but works on
+	  machines where hypervisor mode is not available or not usable,
+	  and can emulate processors that are different from the host
+	  processor, including emulating 32-bit processors on a 64-bit
+	  host.
+
+	  Selecting this option will cause the SCV facility to be
+	  disabled when the kernel is booted on the pseries platform in
+	  hash MMU mode (regardless of PR VMs running). When any PR VMs
+	  are running, "AIL" mode is disabled which may slow interrupts
+	  and system calls on the host.
+
+config KVM_BOOK3S_HV_EXIT_TIMING
+	bool
+
+config KVM_BOOK3S_HV_P9_TIMING
+	bool "Detailed timing for the P9 entry point"
+	select KVM_BOOK3S_HV_EXIT_TIMING
+	depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS
+	help
+	  Calculate time taken for each vcpu during vcpu entry and
+	  exit, time spent inside the guest and time spent handling
+	  hypercalls and page faults. The total, minimum and maximum
+	  times in nanoseconds together with the number of executions
+	  are reported in debugfs in kvm/vm#/vcpu#/timings.
+
+	  If unsure, say N.
+
+config KVM_BOOK3S_HV_P8_TIMING
+	bool "Detailed timing for hypervisor real-mode code (for POWER8)"
+	select KVM_BOOK3S_HV_EXIT_TIMING
+	depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS && !KVM_BOOK3S_HV_P9_TIMING
+	help
+	  Calculate time taken for each vcpu in the real-mode guest entry,
+	  exit, and interrupt handling code, plus time spent in the guest
+	  and in nap mode due to idle (cede) while other threads are still
+	  in the guest.  The total, minimum and maximum times in nanoseconds
+	  together with the number of executions are reported in debugfs in
+	  kvm/vm#/vcpu#/timings.  The overhead is of the order of 30 - 40
+	  ns per exit on POWER8.
+
+	  If unsure, say N.
+
+config KVM_BOOK3S_HV_NESTED_PMU_WORKAROUND
+	bool "Nested L0 host workaround for L1 KVM host PMU handling bug" if EXPERT
+	depends on KVM_BOOK3S_HV_POSSIBLE
+	default !EXPERT
+	help
+	  Old nested HV capable Linux guests have a bug where they don't
+	  reflect the PMU in-use status of their L2 guest to the L0 host
+	  while the L2 PMU registers are live. This can result in loss
+	  of L2 PMU register state, causing perf to not work correctly in
+	  L2 guests.
+
+	  Selecting this option for the L0 host implements a workaround for
+	  those buggy L1s which saves the L2 state, at the cost of performance
+	  in all nested-capable guest entry/exit.
+
+config KVM_BOOKE_HV
+	bool
+
+config KVM_EXIT_TIMING
+	bool "Detailed exit timing"
+	depends on KVM_E500V2 || KVM_E500MC
+	help
+	  Calculate elapsed time for every exit/enter cycle. A per-vcpu
+	  report is available in debugfs kvm/vm#_vcpu#_timing.
+	  The overhead is relatively small, however it is not recommended for
+	  production environments.
+
+	  If unsure, say N.
+
+config KVM_E500V2
+	bool "KVM support for PowerPC E500v2 processors"
+	depends on PPC_E500 && !PPC_E500MC
+	depends on !CONTEXT_TRACKING_USER
+	select KVM
+	select KVM_MMIO
+	select MMU_NOTIFIER
+	help
+	  Support running unmodified E500 guest kernels in virtual machines on
+	  E500v2 host processors.
+
+	  This module provides access to the hardware capabilities through
+	  a character device node named /dev/kvm.
+
+	  If unsure, say N.
+
+config KVM_E500MC
+	bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
+	depends on PPC_E500MC
+	depends on !CONTEXT_TRACKING_USER
+	select KVM
+	select KVM_MMIO
+	select KVM_BOOKE_HV
+	select MMU_NOTIFIER
+	help
+	  Support running unmodified E500MC/E5500/E6500 guest kernels in
+	  virtual machines on E500MC/E5500/E6500 host processors.
+
+	  This module provides access to the hardware capabilities through
+	  a character device node named /dev/kvm.
+
+	  If unsure, say N.
+
+config KVM_MPIC
+	bool "KVM in-kernel MPIC emulation"
+	depends on KVM && PPC_E500
+	select HAVE_KVM_IRQCHIP
+	select HAVE_KVM_IRQFD
+	select HAVE_KVM_IRQ_ROUTING
+	select HAVE_KVM_MSI
+	help
+	  Enable support for emulating MPIC devices inside the
+	  host kernel, rather than relying on userspace to emulate.
+	  Currently, support is limited to certain versions of
+	  Freescale's MPIC implementation.
+
+config KVM_XICS
+	bool "KVM in-kernel XICS emulation"
+	depends on KVM_BOOK3S_64 && !KVM_MPIC
+	select HAVE_KVM_IRQCHIP
+	select HAVE_KVM_IRQFD
+	default y
+	help
+	  Include support for the XICS (eXternal Interrupt Controller
+	  Specification) interrupt controller architecture used on
+	  IBM POWER (pSeries) servers.
+
+config KVM_XIVE
+	bool
+	default y
+	depends on KVM_XICS && PPC_XIVE_NATIVE && KVM_BOOK3S_HV_POSSIBLE
+
+endif # VIRTUALIZATION