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-rw-r--r--include/exec/memory.h2
-rw-r--r--memory.c6
2 files changed, 8 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 055b3a8b23..c0280b7064 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -191,6 +191,8 @@ struct MemoryRegionIOMMUOps {
     void (*notify_flag_changed)(MemoryRegion *iommu,
                                 IOMMUNotifierFlag old_flags,
                                 IOMMUNotifierFlag new_flags);
+    /* Set this up to provide customized IOMMU replay function */
+    void (*replay)(MemoryRegion *iommu, IOMMUNotifier *notifier);
 };
 
 typedef struct CoalescedMemoryRange CoalescedMemoryRange;
diff --git a/memory.c b/memory.c
index ded4bf13d6..b782d5bc5a 100644
--- a/memory.c
+++ b/memory.c
@@ -1626,6 +1626,12 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
     hwaddr addr, granularity;
     IOMMUTLBEntry iotlb;
 
+    /* If the IOMMU has its own replay callback, override */
+    if (mr->iommu_ops->replay) {
+        mr->iommu_ops->replay(mr, n);
+        return;
+    }
+
     granularity = memory_region_iommu_get_min_page_size(mr);
 
     for (addr = 0; addr < memory_region_size(mr); addr += granularity) {