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memory: introduce memory_region_notify_one()

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Generalizing the notify logic in memory_region_notify_iommu() into a
single function. This can be further used in customized replay()
functions for IOMMUs.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: \"Michael S. Tsirkin\" <mst@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1491562755-23867-5-git-send-email-peterx@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Peter Xu 2017-04-07 18:59:10 +08:00 • committed by Eduardo Habkost
parent de472e4a92
commit bd2bfa4c52
2 changed files with 39 additions and 16 deletions
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15
include/exec/memory.h
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@ -687,6 +687,21 @@ uint64_t memory_region_iommu_get_min_page_size(MemoryRegion *mr);
void memory_region_notify_iommu(MemoryRegion *mr,
IOMMUTLBEntry entry);
/**
* memory_region_notify_one: notify a change in an IOMMU translation
* entry to a single notifier
*
* This works just like memory_region_notify_iommu(), but it only
* notifies a specific notifier, not all of them.
*
* @notifier: the notifier to be notified
* @entry: the new entry in the IOMMU translation table. The entry
* replaces all old entries for the same virtual I/O address range.
* Deleted entries have .@perm == 0.
*/
void memory_region_notify_one(IOMMUNotifier *notifier,
IOMMUTLBEntry *entry);
/**
* memory_region_register_iommu_notifier: register a notifier for changes to
* IOMMU translation entries.