From: Vitaly Kuznetsov Date: Fri, 21 May 2021 09:51:43 +0000 (+0200) Subject: KVM: x86: hyper-v: Honor HV_MSR_RESET_AVAILABLE privilege bit X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=679008e4bbeb12f4905ee0820cd2d0b9d4a21dbb;p=linux.git KVM: x86: hyper-v: Honor HV_MSR_RESET_AVAILABLE privilege bit HV_X64_MSR_RESET is only available to guest when HV_MSR_RESET_AVAILABLE bit is exposed. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-10-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index fb5ed867b53c1..1348f76913107 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1222,6 +1222,9 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) case HV_X64_MSR_VP_INDEX: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_VP_INDEX_AVAILABLE; + case HV_X64_MSR_RESET: + return hv_vcpu->cpuid_cache.features_eax & + HV_MSR_RESET_AVAILABLE; default: break; }