From: Vitaly Kuznetsov Date: Fri, 21 May 2021 09:51:48 +0000 (+0200) Subject: KVM: x86: hyper-v: Honor HV_ACCESS_FREQUENCY_MSRS privilege bit X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9442f3bd9012f37ba2b4ec3ab2d7c248b137391c;p=linux.git 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: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-15-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index a168b72334cc4..2a0660b4e779d 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -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; }