diff --git a/include/uapi/linux/idxd.h b/include/uapi/linux/idxd.h
index 1f412fbf561b..e103c1434e4b 100644
--- a/include/uapi/linux/idxd.h
+++ b/include/uapi/linux/idxd.h
@@ -110,9 +110,12 @@ struct dsa_hw_desc {
 	uint16_t	rsvd1;
 	union {
 		uint8_t		expected_res;
+		/* create delta record */
 		struct {
 			uint64_t	delta_addr;
 			uint32_t	max_delta_size;
+			uint32_t 	delt_rsvd;
+			uint8_t 	expected_res_mask;
 		};
 		uint32_t	delta_rec_size;
 		uint64_t	dest2;