[PATCH] drm/amdgpu: add a workaround for GDS ordered append hangs with compute queues

[Marek Olšák]

FYI, when I push this, I'll bump the DRM version.

Marek

On Mon, Feb 4, 2019 at 10:55 AM Marek Olšák <maraeo at gmail.com> wrote:

> On Mon, Feb 4, 2019 at 7:42 AM Christian König <
> ckoenig.leichtzumerken at gmail.com> wrote:
>
>> At least from coding style, backward compatibility etc.. this looks sane
>> to me, so feel free to add an Acked-by.
>>
>> But I absolutely can't judge if that is correct from the hardware point
>> of view or not.
>>
>
> Our GDS docs say that writing the register resets the wave counter.
>
>
>>
>> And I think that somebody else looking at this is mandatory for it to be
>> committed.
>>
>
> There won't be anybody else. Nobody here really understands GDS, nobody
> here really cares about GDS, and hw guys weren't helpful with the hangs. If
> I didn't discover this by luck, GDS OA would be unusable on Linux.
>
> Marek
>
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