memory: introduce memory_region_unmap_iommu_notifier_range()
This patch introduces a new helper to unmap the range of a specific
IOMMU notifier.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230223065924.42503-4-jasowang@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 2e602a2..6fa0b07 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1732,6 +1732,16 @@
IOMMUTLBEvent *event);
/**
+ * memory_region_unmap_iommu_notifier_range: notify a unmap for an IOMMU
+ * translation that covers the
+ * range of a notifier
+ *
+ * @notifier: the notifier to be notified
+ */
+void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *n);
+
+
+/**
* memory_region_register_iommu_notifier: register a notifier for changes to
* IOMMU translation entries.
*
diff --git a/softmmu/memory.c b/softmmu/memory.c
index da7d846..4699ba5 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -1996,6 +1996,19 @@
}
}
+void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *n)
+{
+ IOMMUTLBEvent event;
+
+ event.type = IOMMU_NOTIFIER_UNMAP;
+ event.entry.target_as = &address_space_memory;
+ event.entry.iova = n->start;
+ event.entry.perm = IOMMU_NONE;
+ event.entry.addr_mask = n->end - n->start;
+
+ memory_region_notify_iommu_one(n, &event);
+}
+
void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
int iommu_idx,
IOMMUTLBEvent event)
