diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c index 3f868fed9114..2334ddfbbab2 100644 --- a/arch/x86/kvm/pmu.c +++ b/arch/x86/kvm/pmu.c @@ -433,11 +433,19 @@ static void kvm_pmu_mark_pmc_in_use(struct kvm_vcpu *vcpu, u32 msr) int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) { + if (msr_info->host_initiated && !vcpu->kvm->arch.enable_pmu) { + msr_info->data = 0; + return 0; + } + return static_call(kvm_x86_pmu_get_msr)(vcpu, msr_info); } int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) { + if (msr_info->host_initiated && !vcpu->kvm->arch.enable_pmu) + return !!msr_info->data; + kvm_pmu_mark_pmc_in_use(vcpu, msr_info->index); return static_call(kvm_x86_pmu_set_msr)(vcpu, msr_info); } diff --git a/arch/x86/kvm/svm/pmu.c b/arch/x86/kvm/svm/pmu.c index 136039fc6d01..d93ecb25fe17 100644 --- a/arch/x86/kvm/svm/pmu.c +++ b/arch/x86/kvm/svm/pmu.c @@ -232,7 +232,16 @@ static struct kvm_pmc *amd_rdpmc_ecx_to_pmc(struct kvm_vcpu *vcpu, static bool amd_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr) { /* All MSRs refer to exactly one PMC, so msr_idx_to_pmc is enough. */ - return false; + if (!host_initiated) + return false; + + switch (msr) { + case MSR_K7_EVNTSEL0 ... MSR_K7_PERFCTR3: + case MSR_F15H_PERF_CTL0 ... MSR_F15H_PERF_CTR5: + return true; + default: + return false; + } } static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, u32 msr)