diff options
Diffstat (limited to 'arch/x86/kvm/cpuid.h')
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index fa04a00090a2..e4bd59c15a2c 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -276,6 +276,10 @@ static __always_inline bool guest_can_use(struct kvm_vcpu *vcpu, static inline bool kvm_vcpu_is_legal_cr3(struct kvm_vcpu *vcpu, unsigned long cr3) { + if (kvm_cpu_cap_has(X86_FEATURE_LAM) && + guest_cpuid_has(vcpu, X86_FEATURE_LAM)) + cr3 &= ~(X86_CR3_LAM_U48 | X86_CR3_LAM_U57); + return kvm_vcpu_is_legal_gpa(vcpu, cr3); } |