diff options
| -rw-r--r-- | arch/x86/kvm/x86.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 46301b148f64..e07c5765a551 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3786,6 +3786,16 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) vcpu->arch.guest_fpu.xfd_err = data; break; #endif + case MSR_IA32_PEBS_ENABLE: + case MSR_IA32_DS_AREA: + case MSR_PEBS_DATA_CFG: + if (kvm_pmu_is_valid_msr(vcpu, msr)) + return kvm_pmu_set_msr(vcpu, msr_info); + /* + * Userspace is allowed to write '0' to MSRs that KVM reports + * as to-be-saved, even if an MSRs isn't fully supported. + */ + return !msr_info->host_initiated || data; default: if (kvm_pmu_is_valid_msr(vcpu, msr)) return kvm_pmu_set_msr(vcpu, msr_info); @@ -3866,9 +3876,16 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) case MSR_DRAM_ENERGY_STATUS: /* DRAM controller */ msr_info->data = 0; break; + case MSR_IA32_PEBS_ENABLE: + case MSR_IA32_DS_AREA: + case MSR_PEBS_DATA_CFG: case MSR_F15H_PERF_CTL0 ... MSR_F15H_PERF_CTR5: if (kvm_pmu_is_valid_msr(vcpu, msr_info->index)) return kvm_pmu_get_msr(vcpu, msr_info); + /* + * Userspace is allowed to read MSRs that KVM reports in + * KVM_GET_MSR_INDEX_LIST, even if an MSR isn't fully supported. + */ if (!msr_info->host_initiated) return 1; msr_info->data = 0; |