Function vmx_restore_nmi_blocking

freebsd/amd64/vmm/intel/vmx.c:1612–1621

* If the Virtual NMIs execution control is '1' then the logical processor * tracks virtual-NMI blocking in the Guest Interruptibility-state field of * the VMCS. An IRET instruction in VMX non-root operation will remove any * virtual-NMI blocking. * * This unblocking occurs even if the IRET causes a fault. In this case the * hypervisor needs to restore virtual-NMI blocking before resuming the

 * hypervisor needs to restore virtual-NMI blocking before resuming the guest.
 */
static void
vmx_restore_nmi_blocking(struct vmx *vmx, int vcpuid)
{
	uint32_t gi;

	VCPU_CTR0(vmx->vm, vcpuid, "Restore Virtual-NMI blocking");
	gi = vmcs_read(VMCS_GUEST_INTERRUPTIBILITY);
	gi |= VMCS_INTERRUPTIBILITY_NMI_BLOCKING;
	vmcs_write(VMCS_GUEST_INTERRUPTIBILITY, gi);
}

static void
vmx_clear_nmi_blocking(struct vmx *vmx, int vcpuid)