Quoting Mika Kuoppala (2018-02-08 11:35:09)
> Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
>
> > Reduce the window of opportunity for set-wedged being called
> > concurrently with reset (after i915_reset() has performed the
> > i915_gem_unset_wedged()) by moving the set_bit(I915_WEDGED) to before we
> > complete the inflight requests. When i915_reset() is being blocked on a
> > request, such completion may allow it to start and beginning resetting
> > the GPU before i915_gem_set_wedged() has finished (and so before
> > set-wedge will have marked the device as wedged). As such,
> > i915_gem_init_hw() may see a wedged device even from inside
> > i915_reset().
> >
> > References: 36703e79a982 ("drm/i915: Break modeset deadlocks on reset")
> > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> > Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> > Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
>
> Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Thank you both kindly for the review,
-Chris
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
