Commit 9442f3bd authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Paolo Bonzini
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KVM: x86: hyper-v: Honor HV_ACCESS_FREQUENCY_MSRS privilege bit 



HV_X64_MSR_TSC_FREQUENCY/HV_X64_MSR_APIC_FREQUENCY are only available to
guest when HV_ACCESS_FREQUENCY_MSRS bit is exposed.

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-15-vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 978b5747

arch/x86/kvm/hyperv.c

+4 −0
Original line number Diff line number Diff line
@@ -1253,6 +1253,10 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) 
		return hv_vcpu->cpuid_cache.features_eax &

			HV_MSR_APIC_ACCESS_AVAILABLE;

		break;

	case HV_X64_MSR_TSC_FREQUENCY:

	case HV_X64_MSR_APIC_FREQUENCY:

		return hv_vcpu->cpuid_cache.features_eax &

			HV_ACCESS_FREQUENCY_MSRS;

	default:

		break;

	}