EVTCHN_FIFO_MASKED 138 drivers/xen/events/events_fifo.c array_page[i] = 1 << EVTCHN_FIFO_MASKED; EVTCHN_FIFO_MASKED 240 drivers/xen/events/events_fifo.c new = old & ~(1 << EVTCHN_FIFO_MASKED);