[Intel-gfx] [PATCH 07/10] drm/i915: Add information needed to track engine preempt state

[Chris Wilson]

Quoting Michał Winiarski (2017-10-05 10:20:02)
> We shouldn't inspect ELSP context status (or any other bits depending on
> specific submission backend) when using GuC submission.
> Let's use another piece of HWSP for preempt context, to write its bit of
> information, meaning that preemption has finished, and hardware is now
> idle.
> 
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Jeff Mcgee <jeff.mcgee at intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: Oscar Mateo <oscar.mateo at intel.com>
> Signed-off-by: Michał Winiarski <michal.winiarski at intel.com>

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

But I'm not keen on this being a standalone patch, it has use by itself.
-Chris