Bit fields for guest_intr_signal() and the vdev_pic_functions signal parameter
#include <qvm/types.h>
enum guest_intr_state { GIS_ON = 0x01, GIS_OFF = 0x02, GIS_ISR = 0x04 };
Assert the interrupt.
De-assert the interrupt.
Specifies whether the interrupt be handled in an ISR.