From 0a19c8992db834c9c9e28c5633720d994629539d Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 21 May 2021 11:51:50 +0200 Subject: [PATCH] KVM: x86: hyper-v: Honor HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE privilege bit HV_X64_MSR_CRASH_P0 ... HV_X64_MSR_CRASH_P4, HV_X64_MSR_CRASH_CTL are only available to guest when HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE bit is exposed. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-17-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/hyperv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 230f52606e396..7b7da057b54be 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1262,6 +1262,10 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) case HV_X64_MSR_TSC_EMULATION_STATUS: return hv_vcpu->cpuid_cache.features_eax & HV_ACCESS_REENLIGHTENMENT; + case HV_X64_MSR_CRASH_P0 ... HV_X64_MSR_CRASH_P4: + case HV_X64_MSR_CRASH_CTL: + return hv_vcpu->cpuid_cache.features_edx & + HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; default: break; } -- 2.30.2