KVM: x86/pmu: preserve IA32_PERF_CAPABILITIES across CPUID refresh

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Once MSR_IA32_PERF_CAPABILITIES is changed via vmx_set_msr(), the
value should not be changed by cpuid(). To ensure that the new value
is kept, the default initialization path is moved to intel_pmu_init().
The effective value of the MSR will be 0 if PDCM is clear, however.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Paolo Bonzini 2021-02-02 09:32:35 -05:00

parent 252e365eb2

commit a755753903

1 changed files with 10 additions and 6 deletions

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arch/x86/kvm/vmx/pmu_intel.c

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