On Sat, Aug 11, 2012 at 12:20:19PM -0700, Ben Widawsky wrote: > On Fri, 10 Aug 2012 10:18:10 +0100 > Chris Wilson <chris at chris-wilson.co.uk> wrote: > > > When invalidating the TLBs it is documentated as requiring a post-sync > > write. Failure to do so seems to result in a GPU hang. > > > > Exposure to this hang on IVB seems to be a result of removing the > > extra stalls required for SNB pipecontrol workarounds: > > > > commit 6c6cf5aa9c583478b19e23149feaa92d01fb8c2d > > Author: Chris Wilson <chris at chris-wilson.co.uk> > > Date: Fri Jul 20 18:02:28 2012 +0100 > > > > drm/i915: Only apply the SNB pipe control w/a to gen6 > > > > Reported-by: yex.tian at intel.com > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=53322 > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk> > > This is the moral equivalent of my patch to make the simulator happy > on IVB. Daniel, I'll settle for either patch. > Therefore, > Acked-by: Ben Widawsky <ben at bwidawsk.net> Ok, I'll wait until we have testing feedback from the bug report and then either merge this to -fixes or -next. -Daniel -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
