diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-02-03 16:01:06 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 09:27:26 -0500 |
| commit | f156abec725f945f9884bc6a5bd0dccb5aac16a8 (patch) | |
| tree | 85451d4dbe345a363915705647f8e3a273a94181 /arch | |
| parent | e1f68169a4f89e49f33bf52df29aeb57cb8b1144 (diff) | |
| download | linux-f156abec725f945f9884bc6a5bd0dccb5aac16a8.tar.bz2 | |
KVM: x86: Set so called 'reserved CR3 bits in LM mask' at vCPU reset
Set cr3_lm_rsvd_bits, which is effectively an invalid GPA mask, at vCPU
reset. The reserved bits check needs to be done even if userspace never
configures the guest's CPUID model.
Cc: stable@vger.kernel.org
Fixes: 0107973a80ad ("KVM: x86: Introduce cr3_lm_rsvd_bits in kvm_vcpu_arch")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210204000117.3303214-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 838ce5e9814b..10414a78b951 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10080,6 +10080,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) fx_init(vcpu); vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu); + vcpu->arch.cr3_lm_rsvd_bits = rsvd_bits(cpuid_maxphyaddr(vcpu), 63); vcpu->arch.pat = MSR_IA32_CR_PAT_DEFAULT; |