This callback allows to inform the IOMMU memory region about
restrictions on the supported page sizes.

Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
 include/exec/memory.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 783ef64..1c0374f 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -208,6 +208,10 @@ typedef struct IOMMUMemoryRegionClass {
                                IOMMUAccessFlags flag);
     /* Returns minimum supported page size */
     uint64_t (*get_min_page_size)(IOMMUMemoryRegion *iommu);
+
+    /* Limits the supported page sizes to @pgsizes */
+    void (*set_page_size_mask)(IOMMUMemoryRegion *iommu, uint64_t pgsizes);
+
     /* Called when IOMMU Notifier flag changed */
     void (*notify_flag_changed)(IOMMUMemoryRegion *iommu,
                                 IOMMUNotifierFlag old_flags,
-- 
1.9.1


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