diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-06-03 13:33:03 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-04 12:20:44 -0400 |
| commit | f4f6bd93fdab6f03e20fbbb9e5c6d65fc81b1588 (patch) | |
| tree | 94152cd8a6a197143ba40bf655e97271711784b3 /arch/x86/kvm/vmx/pmu_intel.c | |
| parent | d56f5136b01020155b6b0a29f69d924687529bee (diff) | |
| download | linux-f4f6bd93fdab6f03e20fbbb9e5c6d65fc81b1588.tar.bz2 | |
KVM: VMX: Always treat MSR_IA32_PERF_CAPABILITIES as a valid PMU MSR
Unconditionally return true when querying the validity of
MSR_IA32_PERF_CAPABILITIES so as to defer the validity check to
intel_pmu_{get,set}_msr(), which can properly give the MSR a pass when
the access is initiated from host userspace. The MSR is emulated so
there is no underlying hardware dependency to worry about.
Fixes: 27461da31089a ("KVM: x86/pmu: Support full width counting")
Cc: Like Xu <like.xu@linux.intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200603203303.28545-1-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/pmu_intel.c')
| -rw-r--r-- | arch/x86/kvm/vmx/pmu_intel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c index d33d890b605f..bdcce65c7a1d 100644 --- a/arch/x86/kvm/vmx/pmu_intel.c +++ b/arch/x86/kvm/vmx/pmu_intel.c @@ -181,7 +181,7 @@ static bool intel_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr) ret = pmu->version > 1; break; case MSR_IA32_PERF_CAPABILITIES: - ret = guest_cpuid_has(vcpu, X86_FEATURE_PDCM); + ret = 1; break; default: ret = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0) || |