From f4f6bd93fdab6f03e20fbbb9e5c6d65fc81b1588 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 3 Jun 2020 13:33:03 -0700 Subject: 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 Signed-off-by: Sean Christopherson Message-Id: <20200603203303.28545-1-sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx/pmu_intel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/kvm/vmx/pmu_intel.c') 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) || -- cgit v1.2.3