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authorSean Christopherson <sean.j.christopherson@intel.com>2020-06-03 13:33:03 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-04 12:20:44 -0400
commitf4f6bd93fdab6f03e20fbbb9e5c6d65fc81b1588 (patch)
tree94152cd8a6a197143ba40bf655e97271711784b3 /arch/x86/kvm
parentd56f5136b01020155b6b0a29f69d924687529bee (diff)
downloadlinux-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')
-rw-r--r--arch/x86/kvm/vmx/pmu_intel.c2
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) ||