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[v3,06/15] memory/iommu: Add IOMMU_ATTR_DMA_TRANSLATION attribute

Message ID 20230530175937.24202-7-joao.m.martins@oracle.com (mailing list archive)
State New, archived
Headers show
Series vfio: VFIO migration support with vIOMMU | expand

Commit Message

Joao Martins May 30, 2023, 5:59 p.m. UTC 
Add a new IOMMU attribute IOMMU_ATTR_DMA_TRANSLATION which indicates
whether the IOMMU supports DMA Translation.

This attribute will be used by VFIO device dirty page tracking such that
it can restrict the IOVA under tracking to the memory map when vIOMMU is
configured in IR-only mode without dma translation supported/advertised.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
---
 include/exec/memory.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/exec/memory.h b/include/exec/memory.h
index c3661b2276c7..a02496f34180 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_DMA_TRANSLATION,
 };
 
 /*