ring_top 753 drivers/gpu/drm/i915/gvt/cmd_parser.c unsigned long ring_top = s->ring_start + s->ring_size; ring_top 756 drivers/gpu/drm/i915/gvt/cmd_parser.c if (s->ip_gma >= s->ring_head && s->ip_gma < ring_top) ring_top 760 drivers/gpu/drm/i915/gvt/cmd_parser.c len = (ring_top - s->ring_head) +