On Wed, 14 Dec 2011 13:57:24 +0100, Daniel Vetter <daniel.vetter at ffwll.ch> wrote: > Better be paranoid. The wmb should flush the wc writes, and > the chipset_flush hopefully flushes any mch buffers. There've been a > few overlay hangs I've never really diagnosed, unfortunately all the > reporters disappeared. At which point we should just put the darn wmb into i830_chipset_flush() and make snark remarks about wbinvd. -Chris -- Chris Wilson, Intel Open Source Technology Centre
