DESC_VALID
if (!(control & DESC_VALID))
if (!(desc.control & DESC_VALID))
desc.control ^= DESC_VALID;
desc.control ^= DESC_VALID;
desc.control = DESC_VALID | DESC_LEN(1); /* V L=1 */
desc.control = DESC_VALID | DESC_WRAP | DESC_LEN(1); /* VW L=1 */
desc.control = DESC_VALID | DESC_WRAP | DESC_LEN(1); /* VW L=1 */
desc.control = DESC_VALID;
if (!(desc.control & DESC_VALID)) {
desc.control ^= DESC_VALID;
if (!(desc.control & DESC_VALID)) {
desc.control ^= DESC_VALID;