EFER_NX
#define KVM_MMU_EFER_ROLE_BITS (EFER_LME | EFER_NX)
BUILD_MMU_ROLE_REGS_ACCESSOR(efer, nx, EFER_NX);
efer |= EFER_NX;
kvm_enable_efer_bits(EFER_NX);
vcpu->arch.efer = EFER_SCE | EFER_LME | EFER_LMA | EFER_NX;
guest_efer |= EFER_NX;
(enable_ept && ((vmx->vcpu.arch.efer ^ kvm_host.efer) & EFER_NX))) {
kvm_enable_efer_bits(EFER_NX);
if (efer & EFER_NX && !guest_cpu_cap_has(vcpu, X86_FEATURE_NX))
sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX);