amdgpu vce crash

[Deucher, Alexander]

If any of the engines hang, you can end up with a deadlock if you schedule dependencies across rings since one of the engines is hung.  If you try a newer kernel, GPU reset is enabled and you should be able to recover after a hang.  At that point, you can either restart your applications or use a relevant robustness API to properly handle a reset.

Alex
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of CCXIAOP <664296544 at qq.com>
Sent: Wednesday, June 19, 2019 5:28 AM
To: amd-gfx
Subject: amdgpu vce crash

We are using wx5100 for rendering and encoding operations, but sometimes we encounter vce timeout and crash.
Is vce not a independent module in gpu?Why does it affect the rendering module?
We hope that vce will not affect the rendering module when crashing.
Can I prevent the use of the rendering module from being affected?

linux kernel :4.19.34
mesa: 18.3.5
llvm: 7.0
firmware:18.50


As logs：

2019-06-15T15:33:32.133842+08:00|err|kernel[-]|[315248.172603] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring vce0 timeout, signaled seq=1173730, emitted seq=1173732
2019-06-15T15:33:32.133939+08:00|info|kernel[-]|[315248.172607] [drm] GPU recovery disabled.

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