On Wed, 2023-10-04 at 06:34 +, Gupta, Anshuman wrote:
>
> > -Original Message-
> > From: Teres Alexis, Alan Previn > @@ -289,6 +289,13 @@ int intel_gt_resume(struct intel_gt *gt)
> >
> > static void wait_for_suspend(struct intel_gt *gt) {
> > + /*
> > +* On rare occasions,
, John C
> ; Anshuman Gupta Alan Previn
> ; Gupta,
> Anshuman ; Jana, Mousumi
>
> Subject: [PATCH v4 2/3] drm/i915/guc: Close deregister-context race against
> CT-
> loss
>
> If we are at the end of suspend or very early in resume its possible an async
> fence
> si
If we are at the end of suspend or very early in resume
its possible an async fence signal (via rcu_call) is triggered
to free_engines which could lead us to the execution of
the context destruction worker (after a prior worker flush).
Thus, when suspending, insert an rcu_barrier at the start
of
