On 30/03/2022 16:37, Yang, Fei wrote:
*Patch Details*
*Series:* drm/i915: avoid concurrent writes to aux_inv (rev10)
*URL:* https://patchwork.freedesktop.org/series/100772/
<https://patchwork.freedesktop.org/series/100772/>
*State:* success
*Details:*
https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_22704/index.html
<https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_22704/index.html
CI Bug Log - changes from CI_DRM_11415_full ->
Patchwork_22704_full
Summary
*SUCCESS*
No regressions found.
And pushed.
Thank you so much.
Does this have any chance of fixing hangs in multiple simultaneous media workloads?
I hope so. The hang fixed by this patch is pretty easy to reproduce on TGL with two parallel video decoding processes.
Great!
Do you want to send it to stable in this case? Would need to look how far back it would be easy to backport.
How far back? The change is only applicable for GEN12, so I believe this won't go farther than 5.4?
No need to go beyond 5.9 AFAICT since that is when d248b371f747
("drm/i915/gen12: Invalidate aux table entries forcibly") was added.
That would mean 5.10, 5.15, 5.16 and 5.17 are potential candidates.
We recently had https://gitlab.freedesktop.org/drm/intel/-/issues/5271
and there is also https://gitlab.freedesktop.org/drm/intel/-/issues/5025
so it is probably worth propagating the fix to distros via stable since
people are hitting it.
Regards,
Tvrtko
