[Mesa-dev] [PATCH 2/2] i965/tiled_memcpy: Protect against wrong alignments

[Ian Romanick]

On 04/05/2016 10:19 AM, Jason Ekstrand wrote:
> On Tue, Apr 5, 2016 at 10:12 AM, Roland Scheidegger <sroland at vmware.com
> <mailto:sroland at vmware.com>> wrote:
> 
>     Do you plan on reapplying the code which was
>     reverted due to bug 93962 mentioned there?
>     (Though honestly that code was part 2 of a 4-part series and I was only
>     really interested in parts 3 and 4 which noone ever reviewed... I think
>     they'd still have value today but maybe that's just me...)
> 
> Yes, that was my plan.  The real bug still existed if you built with
> -mssse3.  Now that we've gotten it sorted out, the sse2 code should be
> fine as long as we make the corresponding change there..  It'd be nice
> to get that merged since I think you'd have to work pretty hard to find
> a machine with a GPU that works with the i965 driver and doesn't support
> SSE2.

I was going to say that I have one... but I don't.  I don't think such a
system is even possible.  As far as I'm aware, every Atom, Pentium 4,
Pentium M, and Core processor supports at least SSE2.  I think this
means there may be some systems using i915 that don't have SSE2, but
even those will be rare...  it would have to be an 830M or 830MG with a
Mobile Pentium III-M.

I bet Chris Wilson has one. :)  I found *one* on eBay.

> --Jason
>  
> 
>     Roland