On Wed, Feb 8, 2012 at 18:53, Kenneth Graunke <kenneth at whitecape.org> wrote: > These fix many GPU hangs for Eugeni, though not on my machine for some > reason. > > Oddly, the register writes to UCGCTL2 and SQ_CHICKEN_MBCUNIT_CONFIG stick, > but the writes to L3_CHICKEN_MODE, L3CNTLREG1, and COMMON_SLICE_CHICKEN1 > don't seem to take effect. Currently no theories why. > > Manually writing these values with intel_reg_write /does/ fix the hangs > for me. > > I'm fine with these going to -fixes. They seem to help some people, and > I highly doubt they'll make anything worse. It'd be nice to understand > why the register writes aren't sticking, though... > Complementing Ken's mail, Li Bo from our QA team has did a full round of tests with these patches on IVB and all known issues were gone apparently. Keith, Jesse - I think they are good -fixes candidates at this point. -- Eugeni Dodonov <http://eugeni.dodonov.net/> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20120209/fa839506/attachment.htm>
