TAIL_ADDR        1021 drivers/gpu/drm/i915/gt/intel_engine_cs.c 	    (ENGINE_READ(engine, RING_TAIL) & TAIL_ADDR))
TAIL_ADDR        1210 drivers/gpu/drm/i915/gt/intel_engine_cs.c 		   ENGINE_READ(engine, RING_TAIL) & TAIL_ADDR);