XENDISPL_OP_FB_ATTACH 296 drivers/gpu/drm/xen/xen_drm_front.c req = be_prepare_req(evtchnl, XENDISPL_OP_FB_ATTACH); XENDISPL_OP_FB_ATTACH 48 drivers/gpu/drm/xen/xen_drm_front_evtchnl.c case XENDISPL_OP_FB_ATTACH: