[PATCH V2 0/5] KVM vPMU support for AMD

Wei Huang
2015-04-08T16:18:28Z

Currently KVM only supports vPMU for Intel platforms. This patch set
enable vPMU support for AMD platform by creating a common PMU
interface for x86. The PMU calls from guest VMs are dispatched
to corresponding functions defined in arch specific files.

V2:
* Create a generic pmu.c file which is shared by Intel and AMD CPUs;
* pmu.c code becomes part of kvm.ko module. Similarly pmu_intel.c and
pmu_amd.c are linked to kvm-intel.ko and kvm-amd.ko respectively;
* Re-define kvm_pmu_ops function pointers. Per Radim Krcmar's comments,
a large portion of Intel vPMU code are now consolidated and moved to
pmu.c;
* Polish pmu_amd.c code to comply with new definition of kvm_pmu_ops;

V1:
* Adopt the file layout suggested by Radim Krcmar
* Link arch module with its specific PMU file

RFC:
* Initial version for RFC

Wei Huang (5):
KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch
KVM: x86/vPMU: Rename pmu.c file to pmu_intel.c
KVM: x86/vPMU: Create vPMU interface for VMX and SVM
KVM: x86/vPMU: Implement vPMU code AMD CPUs
KVM: x86/vPMU: Enable PMU handling for AMD PERFCTRn and EVNTSELn MSRs

arch/x86/include/asm/kvm_host.h | 38 ++-
arch/x86/kvm/Makefile | 4 +-
arch/x86/kvm/cpuid.c | 3 +-
arch/x86/kvm/pmu.c | 563 +++++++++++-----------------------------
arch/x86/kvm/pmu.h | 98 +++++++
arch/x86/kvm/pmu_amd.c | 198 ++++++++++++++
arch/x86/kvm/pmu_intel.c | 360 +++++++++++++++++++++++++
arch/x86/kvm/svm.c | 8 +
arch/x86/kvm/vmx.c | 8 +
arch/x86/kvm/x86.c | 57 ++--
10 files changed, 896 insertions(+), 441 deletions(-)
create mode 100644 arch/x86/kvm/pmu.h
create mode 100644 arch/x86/kvm/pmu_amd.c
create mode 100644 arch/x86/kvm/pmu_intel.c

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