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authorVitaly Kuznetsov <[email protected]>2021-05-21 11:51:41 +0200
committerPaolo Bonzini <[email protected]>2021-06-17 13:09:39 -0400
commitc2b32867f2e7bfa7e7521e417ab8bbd586ac6bcc (patch)
tree411b122976b89832b98aaf10c89e34da288b0bdd
parentb80a92ff81587c556da740e9073821b5c3c23b72 (diff)
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 <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
-rw-r--r--arch/x86/kvm/hyperv.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 6a9eb934ffe0..c90679247185 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;
}