diff options
| author |   Sean Christopherson <seanjc@google.com> | 2021-02-03 16:01:06 -0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 12:59:28 -0500 |
| commit | 031b91a5fe6f1ce61b7617614ddde9ed61e252be (patch) | |
| tree | a982fd5f423b002896d6e2379c4b9bb6ac68b076 /arch | |
| parent | KVM: x86/mmu: Fix TDP MMU zap collapsible SPTEs (diff) | |
| download | linux-dev-031b91a5fe6f1ce61b7617614ddde9ed61e252be.tar.xz linux-dev-031b91a5fe6f1ce61b7617614ddde9ed61e252be.zip | |
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 c1650e26715b..1b404e4d7dd8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10003,6 +10003,7 @@ 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; |