On Fri, 2015-10-02 at 14:53 +1000, Dave Airlie wrote: > On 2 October 2015 at 14:45, Benjamin Herrenschmidt > <benh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Fri, 2015-10-02 at 14:42 +1000, Dave Airlie wrote: > > > I don't think we resolved this the last time we talked about it, > > > > > > but radeon writecombine maps fail hard on ppc, I think all the > > > fixes > > > either did something bad to AGP systems or weren't liked. > > > > > > My patch attached just fixes radeon, which is where I'm still > > > seeing > > > the issue. > > > > Yes, you MUST NOT set the flags of system memory to anything other > > than > > fully cachable on any cache coherent powerpc machine. This should > > be > > bolted into the DRM core imho. > > > > Except you guys screwed up and allowed AGP to exist on Power, and > that requires it. Well, Apple did :-) Yes, AGP should never have existed in the first place, I think that's a given :) > So we have to keep the AGP trapdoor in place, and at the moment only > the drivers know if they are AGP, hence why I had to add this in the > driver instead of in the drm core. Cheers, Ben. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
