From: Vitaly Kuznetsov Date: Fri, 21 May 2021 09:51:41 +0000 (+0200) Subject: KVM: x86: hyper-v: Honor HV_MSR_TIME_REF_COUNT_AVAILABLE privilege bit X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c2b32867f2e7bfa7e7521e417ab8bbd586ac6bcc;p=linux.git KVM: x86: hyper-v: Honor HV_MSR_TIME_REF_COUNT_AVAILABLE privilege bit HV_X64_MSR_TIME_REF_COUNT is only available to guest when HV_MSR_TIME_REF_COUNT_AVAILABLE bit is exposed. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-8-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 6a9eb934ffe09..c90679247185f 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1216,6 +1216,9 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) case HV_X64_MSR_VP_RUNTIME: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_VP_RUNTIME_AVAILABLE; + case HV_X64_MSR_TIME_REF_COUNT: + return hv_vcpu->cpuid_cache.features_eax & + HV_MSR_TIME_REF_COUNT_AVAILABLE; default: break; }