MSR_EFER
wrmsr(MSR_EFER, rdmsr(MSR_EFER) | EFER_NXE);
wrmsr(MSR_EFER, rdmsr(MSR_EFER) | EFER_NXE);
if (exit->u.rdmsr.msr == MSR_EFER) {
if (exit->u.wrmsr.msr == MSR_EFER) {
msr = rdmsr(MSR_EFER);
wrmsr(MSR_EFER, msr);
vmx_vcpu_msr_allow(cpudata->msrbm, MSR_EFER, true, true);
vmx_vmwrite(VMCS_HOST_IA32_EFER, rdmsr(MSR_EFER));