The flag will be used by VFIO to map DMA for device MMIO on IOMMU page table.
Signed-off-by: Wencheng Yang <east.moutain.yang@xxxxxxxxx>
---
include/uapi/linux/vfio.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index c8dbf8219c4f..68002c8f1157 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -1560,6 +1560,7 @@ struct vfio_iommu_type1_dma_map {
#define VFIO_DMA_MAP_FLAG_READ (1 << 0) /* readable from device */
#define VFIO_DMA_MAP_FLAG_WRITE (1 << 1) /* writable from device */
#define VFIO_DMA_MAP_FLAG_VADDR (1 << 2)
+#define VFIO_DMA_MAP_FLAG_MMIO (1 << 3) /* map of mmio */
__u64 vaddr; /* Process virtual address */
__u64 iova; /* IO virtual address */
__u64 size; /* Size of mapping (bytes) */
--
2.43.0
