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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-21 11:51:48 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:41 -0400 |
| commit | 9442f3bd9012f37ba2b4ec3ab2d7c248b137391c (patch) | |
| tree | 0f76c3b839c4ae6da1b98f5e6bc65115569ce41f | |
| parent | 978b57475c7795824676122acb75a1dea264b6d1 (diff) | |
| download | linux-stable-9442f3bd9012f37ba2b4ec3ab2d7c248b137391c.tar.gz linux-stable-9442f3bd9012f37ba2b4ec3ab2d7c248b137391c.tar.bz2 linux-stable-9442f3bd9012f37ba2b4ec3ab2d7c248b137391c.zip | |
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 <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-15-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index a168b72334cc..2a0660b4e779 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; } |