Commit a1ec661c authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Paolo Bonzini
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KVM: x86: hyper-v: Honor HV_MSR_REFERENCE_TSC_AVAILABLE privilege bit 



HV_X64_MSR_REFERENCE_TSC is only available to guest when
HV_MSR_REFERENCE_TSC_AVAILABLE bit is exposed.

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-11-vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 679008e4

arch/x86/kvm/hyperv.c

+3 −0
Original line number Diff line number Diff line
@@ -1225,6 +1225,9 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) 
	case HV_X64_MSR_RESET:

		return hv_vcpu->cpuid_cache.features_eax &

			HV_MSR_RESET_AVAILABLE;

	case HV_X64_MSR_REFERENCE_TSC:

		return hv_vcpu->cpuid_cache.features_eax &

			HV_MSR_REFERENCE_TSC_AVAILABLE;

	default:

		break;

	}