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>
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memory.c
9
memory.c
@ -1603,6 +1603,11 @@ static void memory_region_update_iommu_notify_flags(MemoryRegion *mr)
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void memory_region_register_iommu_notifier(MemoryRegion *mr,
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IOMMUNotifier *n)
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{
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if (mr->alias) {
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memory_region_register_iommu_notifier(mr->alias, n);
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return;
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}
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/* We need to register for at least one bitfield */
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assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
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QLIST_INSERT_HEAD(&mr->iommu_notify, n, node);
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@ -1643,6 +1648,10 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
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void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
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IOMMUNotifier *n)
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{
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if (mr->alias) {
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memory_region_unregister_iommu_notifier(mr->alias, n);
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return;
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}
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QLIST_REMOVE(n, node);
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memory_region_update_iommu_notify_flags(mr);
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}
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