Comment # 37 on bug 111763 from Andrew Sheldon

(In reply to Daniel Suarez from comment #33)

> That workaround delays the hangs af best, and I have gotten hangs from
> OpenGl Games and also by using amdvlk. 
> 

Those hangs shouldn't be SDMA related, however. If you are getting hangs from
specific games, report them on the corresponding bug tracker
(https://gitlab.freedesktop.org/mesa/mesa for OGL and RADV,
https://github.com/GPUOpen-Drivers/AMDVLK/issues for AMDVLK).

I suggest using RADV_PERFTEST=aco with mesa-git for the most stable Vulkan
experience (or try the AMDGPU-PRO Vulkan driver). 

There's also the "divide error" random hang issue, but it shouldn't be related
to SDMA either.