Quoting Chris Wilson (2018-03-26 12:50:35)
> When cancelling the requests and clearing out the ports following a
> successful preemption completion, also clear the active flag. I had
> assumed that all preemptions would be followed by an immediate dequeue
> (preserving the active user flag), but under rare circumstances we may
> be triggering a preemption for the second port only for it to have
> completed before the preemotion kicks in; leaving execlists->active set
> even though the system is now idle.
>
> We can clear the flag inside the common execlists_cancel_port_requests()
> as the other users also expect the semantics of active being cleared.
>
> Fixes: f6322eddaff7 ("drm/i915/preemption: Allow preemption between
> submission ports")
> Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
> Cc: Michał Winiarski <michal.winiar...@intel.com>
> Cc: Michel Thierry <michel.thie...@intel.com>
> Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
From the earlier posting,
Reviewed-by: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Mika, any chance you want to complete the hat check and review the first
patch as well? :)
-Chris
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