INDIRECT_CTX_RING_TAIL
xe_lrc_write_indirect_ctx_reg(lrc, INDIRECT_CTX_RING_TAIL, lrc->ring.tail);
xe_lrc_write_indirect_ctx_reg(lrc, INDIRECT_CTX_RING_TAIL, tail);
return xe_lrc_read_indirect_ctx_reg(lrc, INDIRECT_CTX_RING_TAIL) & TAIL_ADDR;