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[RFC,v2,11/17] memory: provide iommu_replay_all()

Message ID 1483428594-28880-12-git-send-email-peterx@redhat.com
State New
Headers show

Commit Message

Peter Xu Jan. 3, 2017, 7:29 a.m. UTC 
This is an "global" version of exising memory_region_iommu_replay() - we
announce the translations to all the registered notifiers, instead of a
specific one.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 include/exec/memory.h | 8 ++++++++
 memory.c              | 9 +++++++++
 2 files changed, 17 insertions(+)
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Patch

diff --git a/include/exec/memory.h b/include/exec/memory.h
index cecfed1..d8363a0 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -694,6 +694,14 @@  void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
                                 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
  * changes to IOMMU translation entries.
  *
diff --git a/memory.c b/memory.c
index e88bb54..df62bd1 100644
--- a/memory.c
+++ b/memory.c
@@ -1645,6 +1645,15 @@  void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
     }
 }
 
+void memory_region_iommu_replay_all(MemoryRegion *mr)
+{
+    IOMMUNotifier *notifier;
+
+    QLIST_FOREACH(notifier, &mr->iommu_notify, node) {
+        memory_region_iommu_replay(mr, notifier, false);
+    }
+}
+
 void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
                                              IOMMUNotifier *n)
 {