diff --git a/lib/idxd/idxd.c b/lib/idxd/idxd.c
index ccbecb8ff..5ff6af10f 100644
--- a/lib/idxd/idxd.c
+++ b/lib/idxd/idxd.c
@@ -719,6 +719,7 @@ spdk_idxd_submit_copy(struct spdk_idxd_io_channel *chan,
 		desc->src_addr = src_addr;
 		desc->dst_addr = dst_addr;
 		desc->xfer_size = len;
+		desc->flags |= IDXD_FLAG_CACHE_CONTROL; /* direct IO to CPU cache instead of mem */
 	}
 
 	rc = idxd_batch_submit(chan, batch, cb_fn, cb_arg);
@@ -1189,6 +1190,7 @@ _idxd_submit_copy_crc32c_single(struct spdk_idxd_io_channel *chan, void *dst, vo
 	desc->opcode = IDXD_OPCODE_COPY_CRC;
 	desc->dst_addr = dst_addr;
 	desc->src_addr = src_addr;
+	desc->flags |= IDXD_FLAG_CACHE_CONTROL; /* direct IO to CPU cache instead of mem */
 	desc->flags &= IDXD_CLEAR_CRC_FLAGS;
 	desc->crc32c.seed = seed;
 	desc->xfer_size = nbytes;
@@ -1267,6 +1269,7 @@ spdk_idxd_submit_copy_crc32c(struct spdk_idxd_io_channel *chan,
 		desc->opcode = IDXD_OPCODE_COPY_CRC;
 		desc->dst_addr = dst_addr;
 		desc->src_addr = src_addr;
+		desc->flags |= IDXD_FLAG_CACHE_CONTROL; /* direct IO to CPU cache instead of mem */
 		if (prev_crc == NULL) {
 			desc->crc32c.seed = seed;
 		} else {