Re: [Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-18 Thread Daniel Vetter
On Mon, Oct 15, 2012 at 5:11 PM, Greg KH gre...@linuxfoundation.org wrote: On Mon, Oct 15, 2012 at 10:11:22AM +0200, Daniel Vetter wrote: Hi Gregstable-team, The below patch papers over a graphics corruption issue in 3.5/3.6. The regression happened due to pwrite tunings in 3.5, which made

[Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-15 Thread Daniel Vetter
Hi Gregstable-team, The below patch papers over a graphics corruption issue in 3.5/3.6. The regression happened due to pwrite tunings in 3.5, which made cpu relocations much more likely. The issue seems to have disappeared in 3.7-rc1, but it takes a few days to test a patch, so we haven't

Re: [Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-15 Thread Greg KH
On Mon, Oct 15, 2012 at 10:11:22AM +0200, Daniel Vetter wrote: Hi Gregstable-team, The below patch papers over a graphics corruption issue in 3.5/3.6. The regression happened due to pwrite tunings in 3.5, which made cpu relocations much more likely. The issue seems to have disappeared in

Re: [Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-15 Thread Daniel Vetter
On Mon, Oct 15, 2012 at 5:11 PM, Greg KH gre...@linuxfoundation.org wrote: On Mon, Oct 15, 2012 at 10:11:22AM +0200, Daniel Vetter wrote: Hi Gregstable-team, The below patch papers over a graphics corruption issue in 3.5/3.6. The regression happened due to pwrite tunings in 3.5, which made

Re: [Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-15 Thread Greg KH
On Mon, Oct 15, 2012 at 07:16:26PM +0200, Daniel Vetter wrote: On Mon, Oct 15, 2012 at 5:11 PM, Greg KH gre...@linuxfoundation.org wrote: On Mon, Oct 15, 2012 at 10:11:22AM +0200, Daniel Vetter wrote: Hi Gregstable-team, The below patch papers over a graphics corruption issue in 3.5/3.6.

[Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-10 Thread Daniel Vetter
They seem to be implicated in render corruptions. And up to now no one really seems to understand the issue, so let's just disable them for now. Most of the machines exhibiting this issue have only a 128 gtt mmio window, so increased pressure on the mappable part (and so higher chance for cpu

Re: [Intel-gfx] [PATCH] drm/i915: disable cpu relocs on ilk and earlier

2012-10-10 Thread Chris Wilson
On Wed, 10 Oct 2012 10:06:40 +0200, Daniel Vetter daniel.vet...@ffwll.ch wrote: They seem to be implicated in render corruptions. And up to now no one really seems to understand the issue, so let's just disable them for now. Most of the machines exhibiting this issue have only a 128 gtt mmio