"GT does not generate interrupts while in RC6 (by design)" It talks about the PM interrupt but I think this might also apply to interrupts in general. So I think we should apply the voodoo patch also to snb. My current working theory is hw engineers changed the way hwstam writes are generated wrt to the read/write/irq pipeline on ivb and we've only been lucky that it syncs out everything on snb before the gpu goes into deep sleep states. -Daniel -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
