(In reply to Pierre-Eric Pelloux-Prayer from comment #93)
> Created attachment 145734 [details] [review] [review]
> sdma read delay
> 
> Hi all,
> 
> Here's a new patch that should help with sdma issues.
> 
> This is not a replacement for
> https://patchwork.freedesktop.org/patch/335077/ nor
> https://bugs.freedesktop.org/show_bug.cgi?id=111481#c33 so ideally you
> should have the 3 patches applied and the "AMD_DEBUG=nodma" workaround
> disabled.
> 
> Let me know if it helps getting rid of the sdma timeout errors. Thanks!

Ok here's feedback already, I haven't had any issues with "random" desktop
freezes since yesterday since I applied the patch
https://patchwork.freedesktop.org/patch/335077/

So basically I can now use desktop for the most part without nodma globally
enabled, I will report back if it turns out not to be the case.

With all those 3 patches applied, Rocket League successfully launched 2 times
out of 10, so I could say that 80% of time it will still provoke the SDMA type
hang. Unfortunately this is the only game that I know that provokes the SDMA
hang compared to ring_gfx hangs on Starcraft II and Rise of the Tomb Raider.