VMCB_CTRL_INTR_SHADOW
((vmcb->ctrl.intr & VMCB_CTRL_INTR_SHADOW) != 0);
vmcb->ctrl.intr |= VMCB_CTRL_INTR_SHADOW;
vmcb->ctrl.intr &= ~VMCB_CTRL_INTR_SHADOW;
(vmcb->ctrl.intr & VMCB_CTRL_INTR_SHADOW) != 0;
vmcb->ctrl.intr &= ~VMCB_CTRL_INTR_SHADOW;