On Wed, 16 Nov 2011 17:05:37 -0200 Eugeni Dodonov <eugeni at dodonov.net> wrote: > On Wed, Nov 16, 2011 at 15:24, Andrew Lutomirski <luto at mit.edu> wrote: > > > AFAICT my snb laptop has always been stable with semaphores and VT-d > > enabled. Is this problem possibly restricted to just desktop > > machines? I'm happy to test, since my box that can reproduce the hang > > instantly is still around. > > > > I cannot reproduce those issues on any mobile SNB, but I am out of desktop > ones. So perhaps it is a clue. > > Jesse, Keith, Daniel, what if we add something like: > > ... > .has_semaphores=1, .has_rc6=1 > ... > > to i915_drv.c intel_sandybridge_m_info, and take them into account when > using default values for those settings? Something like that is fine with me, or just doing it in modeset_init for certain chipsets. -- Jesse Barnes, Intel Open Source Technology Center
