diff options
Diffstat (limited to 'xen/common/event_channel.c')
| -rw-r--r-- | xen/common/event_channel.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c index c51fd10031..f4ea79f4b2 100644 --- a/xen/common/event_channel.c +++ b/xen/common/event_channel.c @@ -1013,10 +1013,27 @@ void notify_via_xen_event_channel(int lport) int evtchn_init(struct domain *d) { spin_lock_init(&d->event_lock); + + d->pirq_to_evtchn = xmalloc_array(u16, d->nr_pirqs); + d->pirq_mask = xmalloc_array( + unsigned long, BITS_TO_LONGS(d->nr_pirqs)); + if ( (d->pirq_to_evtchn == NULL) || (d->pirq_mask == NULL) ) + goto fail; + memset(d->pirq_to_evtchn, 0, d->nr_pirqs * sizeof(*d->pirq_to_evtchn)); + bitmap_zero(d->pirq_mask, d->nr_pirqs); + if ( get_free_port(d) != 0 ) - return -EINVAL; + goto fail; evtchn_from_port(d, 0)->state = ECS_RESERVED; + return 0; + + fail: + xfree(d->pirq_to_evtchn); + d->pirq_to_evtchn = NULL; + xfree(d->pirq_mask); + d->pirq_mask = NULL; + return -ENOMEM; } @@ -1044,6 +1061,11 @@ void evtchn_destroy(struct domain *d) d->evtchn[i] = NULL; } spin_unlock(&d->event_lock); + + xfree(d->pirq_to_evtchn); + d->pirq_to_evtchn = NULL; + xfree(d->pirq_mask); + d->pirq_mask = NULL; } static void domain_dump_evtchn_info(struct domain *d) |