Re: [PATCH] drm/i915/selftests: Adjust y-tiling height for older machines

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Quoting Rodrigo Vivi (2018-07-06 21:55:37)
> On Fri, Jul 06, 2018 at 09:39:14PM +0100, Chris Wilson wrote:
> > Quoting Rodrigo Vivi (2018-07-06 21:27:52)
> > > On Fri, Jul 06, 2018 at 06:15:37PM +0100, Chris Wilson wrote:
> > > > Older machines do not have the 128-byte tile width format for
> > > > I915_TILING_Y and so we must adapt our reference swizzle.
> > > > 
> > > > Testcase: igt/drv_selftest/live_objects #gdg
> > > 
> > > The change below itself makes sense to me, but I'm trying to understand
> > > where this came from....
> > 
> > The result doesn't look right, so scrap it.
> >  
> > > Looking to https://intel-gfx-ci.01.org/tree/drm-tip/igt@drv_selftest@live_objects.html
> > > is this related to issues on fi-gdg-551?
> > 
> > Would only apply to gdg in the farm.
> >  
> > > Or is this related to that APL bugzilla entry?
> 
> that flash of a moment when I wondered you could be actually targeting this:
> https://bugs.freedesktop.org/show_bug.cgi?id=107113

Ah, totally unrelated problem :)

Fwiw, I can reproduce this on my i915gm so hopefully should be able to
resolve it without spamming the lists.
-Chris
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