[PATCH v2 15/20] memory/iommu: Add IOMMU_ATTR_MAX_IOVA attribute

[Avihai Horon <avihaih@nvidia.com>]

Add a new IOMMU attribute IOMMU_ATTR_MAX_IOVA which indicates the
maximal IOVA that an IOMMU can use.

This attribute will be used by VFIO device dirty page tracking so it can
track the entire IOVA space when needed (i.e. when vIOMMU is enabled).

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Acked-by: Peter Xu <peterx@redhat.com>
---
 include/exec/memory.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 2e602a2fad..cdd47fb79b 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -316,7 +316,8 @@ typedef struct MemoryRegionClass {
 
 
 enum IOMMUMemoryRegionAttr {
-    IOMMU_ATTR_SPAPR_TCE_FD
+    IOMMU_ATTR_SPAPR_TCE_FD,
+    IOMMU_ATTR_MAX_IOVA,
 };
 
 /*
-- 
2.26.3