[Beignet] [PATCH] Remove obsolete MI_FLUSH

[Zhigang Gong]

On Mon, Dec 29, 2014 at 11:17:43AM +0800, Zhenyu Wang wrote:
> On 2014.12.29 10:06:58 +0800, Zhigang Gong wrote:
> > When does the kernel do instruction cache invalidate for us?
> > Could you give a pointer to the related code.
> >
> 
> You may check i915_gem_execbuffer_move_to_gpu() function.

I just checked and confirmed that it does flush and invalidate all type of caches.

> 
> > I also tested it and found many utests failures. My kernel version is
> > as below:
> > 
> > Linux ivb-gt2-rev4 3.17.1 #1 SMP Fri Oct 24 14:45:46 CST 2014 x86_64 x86_64 x86_64 GNU/Linux
> >
> 
> I tested with drm-intel-nightly tree which seems fine on HSW and BDW.
> I haven't run it on IVB, might try that later.

I also tested your patch on HSW, and it works fine. But it doesn't work on IVB.
Don't know why, but need further investigation.

> 
> -- 
> Open Source Technology Center, Intel ltd.
> 
> $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827



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