KVM: x86/pmu: Add kvm_pmu_cap to optimize perf_get_x86_pmu_capability

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The information obtained from the interface perf_get_x86_pmu_capability()
doesn't change, so an exported "struct x86_pmu_capability" is introduced
for all guests in the KVM, and it's initialized before hardware_setup().

Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220411101946.20262-16-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Like Xu 2022-04-11 18:19:44 +08:00 • committed by Paolo Bonzini

parent 854250329c

commit 968635abd5

5 changed files with 42 additions and 33 deletions

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27

arch/x86/kvm/cpuid.c

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3

arch/x86/kvm/pmu.c

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19

arch/x86/kvm/pmu.h

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17

arch/x86/kvm/vmx/pmu_intel.c

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9

arch/x86/kvm/x86.c

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