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memory: provide iommu_replay_all()

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This is an "global" version of existing memory_region_iommu_replay() -
we announce the translations to all the registered notifiers, instead of
a specific one.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: \"Michael S. Tsirkin\" <mst@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1491562755-23867-4-git-send-email-peterx@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Peter Xu 2017-04-07 18:59:09 +08:00 • committed by Eduardo Habkost
parent 512fa40867
commit de472e4a92
2 changed files with 17 additions and 0 deletions
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8
include/exec/memory.h
View file

@ -712,6 +712,14 @@ void memory_region_register_iommu_notifier(MemoryRegion *mr,
void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
bool is_write); bool is_write);
/**
* memory_region_iommu_replay_all: replay existing IOMMU translations
* to all the notifiers registered.
*
* @mr: the memory region to observe
*/
void memory_region_iommu_replay_all(MemoryRegion *mr);
/** /**
* memory_region_unregister_iommu_notifier: unregister a notifier for * memory_region_unregister_iommu_notifier: unregister a notifier for
* changes to IOMMU translation entries. * changes to IOMMU translation entries.

9
memory.c
View file

@ -1642,6 +1642,15 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
} }
} }
void memory_region_iommu_replay_all(MemoryRegion *mr)
{
IOMMUNotifier *notifier;
IOMMU_NOTIFIER_FOREACH(notifier, mr) {
memory_region_iommu_replay(mr, notifier, false);
}
}
void memory_region_unregister_iommu_notifier(MemoryRegion *mr, void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n) IOMMUNotifier *n)
{ {