On Mon, Nov 24, 2014 at 11:30:24AM +0100, Daniel Vetter wrote: > The problem here is that SNA pins batchbuffers to etch out a bit more > performance. Iirc it started out as a w/a for i830M (which we've > implemented in the kernel since a long time already). Hmm, we only finally fixed it in the kernel a couple of months ago. > The problem is > that the pin ioctl wasn't added in > > commit d23db88c3ab233daed18709e3a24d6c95344117f > Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Date: Fri May 23 08:48:08 2014 +0200 > > drm/i915: Prevent negative relocation deltas from wrapping > > Fix this by simply disallowing pinning from userspace so that the > kernel is in full control of batch placement again. Especially since > distros are moving towards running X as non-root, so most users won't > even be able to see any benefits. Pinning is a useful tool and it would also be useful to have again on gen6+. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
