Intel MKTME repurposes several high bits of physical address as 'keyID', so boot_cpu_data.x86_phys_bits doesn't hold physical address bits reported by CPUID anymore. If guest.MAXPHYADDR < host.MAXPHYADDR, the bit field of ‘keyID’ belongs to reserved bits in guest’s view, so intercepting #PF to fix error code is necessary, just replace boot_cpu_data.x86_phys_bits with kvm_get_shadow_phys_bits() to fix. Signed-off-by: Tao Su <tao1.su@xxxxxxxxxxxxxxx> --- arch/x86/kvm/vmx/vmx.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 65786dbe7d60..79b1757df74a 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -15,6 +15,7 @@ #include "vmx_ops.h" #include "../cpuid.h" #include "run_flags.h" +#include "../mmu.h" #define MSR_TYPE_R 1 #define MSR_TYPE_W 2 @@ -719,7 +720,8 @@ static inline bool vmx_need_pf_intercept(struct kvm_vcpu *vcpu) if (!enable_ept) return true; - return allow_smaller_maxphyaddr && cpuid_maxphyaddr(vcpu) < boot_cpu_data.x86_phys_bits; + return allow_smaller_maxphyaddr && + cpuid_maxphyaddr(vcpu) < kvm_get_shadow_phys_bits(); } static inline bool is_unrestricted_guest(struct kvm_vcpu *vcpu) base-commit: b3603fcb79b1036acae10602bffc4855a4b9af80 -- 2.34.1
