diff options
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/events.c | 27 | ||||
| -rw-r--r-- | drivers/xen/manage.c | 10 |
2 files changed, 33 insertions, 4 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 332dd63750a..0e0c28574af 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -734,6 +734,33 @@ static void restore_cpu_ipis(unsigned int cpu) } } +/* Clear an irq's pending state, in preparation for polling on it */ +void xen_clear_irq_pending(int irq) +{ + int evtchn = evtchn_from_irq(irq); + + if (VALID_EVTCHN(evtchn)) + clear_evtchn(evtchn); +} + +/* Poll waiting for an irq to become pending. In the usual case, the + irq will be disabled so it won't deliver an interrupt. */ +void xen_poll_irq(int irq) +{ + evtchn_port_t evtchn = evtchn_from_irq(irq); + + if (VALID_EVTCHN(evtchn)) { + struct sched_poll poll; + + poll.nr_ports = 1; + poll.timeout = 0; + poll.ports = &evtchn; + + if (HYPERVISOR_sched_op(SCHEDOP_poll, &poll) != 0) + BUG(); + } +} + void xen_irq_resume(void) { unsigned int cpu, irq, evtchn; diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c index 5b546e365f0..a5bc91ae6ff 100644 --- a/drivers/xen/manage.c +++ b/drivers/xen/manage.c @@ -63,11 +63,12 @@ static int xen_suspend(void *data) gnttab_resume(); xen_mm_unpin_all(); - device_power_up(); + device_power_up(PMSG_RESUME); if (!*cancelled) { xen_irq_resume(); xen_console_resume(); + xen_timer_resume(); } return 0; @@ -107,12 +108,13 @@ static void do_suspend(void) goto out; } - if (!cancelled) + if (!cancelled) { + xen_arch_resume(); xenbus_resume(); - else + } else xenbus_suspend_cancel(); - device_resume(); + device_resume(PMSG_RESUME); /* Make sure timer events get retriggered on all CPUs */ clock_was_set(); |