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memory: handle alias for iommu notifier 

Cc: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Jason Wang 2016-12-30 18:09:17 +08:00 committed by Michael S. Tsirkin
parent bd2baaccd5
commit efcd38c529
1 changed files with 9 additions and 0 deletions
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9
memory.c
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@ -1603,6 +1603,11 @@ static void memory_region_update_iommu_notify_flags(MemoryRegion *mr)
void memory_region_register_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n)
{
if (mr->alias) {
memory_region_register_iommu_notifier(mr->alias, n);
return;
}
/* We need to register for at least one bitfield */
assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
QLIST_INSERT_HEAD(&mr->iommu_notify, n, node);
@ -1643,6 +1648,10 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n)
{
if (mr->alias) {
memory_region_unregister_iommu_notifier(mr->alias, n);
return;
}
QLIST_REMOVE(n, node);
memory_region_update_iommu_notify_flags(mr);
}