Messages in this thread Patch in this message |  | | Date | Wed, 3 Feb 2021 16:01:06 -0800 | Subject | [PATCH 01/12] KVM: x86: Set so called 'reserved CR3 bits in LM mask' at vCPU reset | From | Sean Christopherson <> |
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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> --- arch/x86/kvm/x86.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 667d0042d0b7..e6fbf2f574a6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10091,6 +10091,7 @@ 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; -- 2.30.0.365.g02bc693789-goog
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