From: Vitaly Kuznetsov Date: Fri, 21 May 2021 09:51:44 +0000 (+0200) Subject: KVM: x86: hyper-v: Honor HV_MSR_REFERENCE_TSC_AVAILABLE privilege bit X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a1ec661c3fdc8177a8789a9528d5bcfe0d9fc8a8;p=linux.git 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: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-11-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 1348f76913107..7ca7ea0b6e741 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -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; }