[Intel-gfx] [PATCH] drm/i915/execlists: Inhibit context save/restore for the fake preempt context

Chris Wilson chris at chris-wilson.co.uk
Tue Jan 23 21:01:09 UTC 2018


Quoting Daniele Ceraolo Spurio (2018-01-23 19:37:30)
> 
> 
> On 23/01/18 10:53, Michel Thierry wrote:
> > On 1/23/2018 9:05 AM, Chris Wilson wrote:
> >> We only use the preempt context to inject an idle point into execlists.
> >> We never need to reference its logical state, so tell the GPU never to
> >> load it or save it.
> >>
> >> Suggested-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
> 
> I don't think I deserve credit for this...

You mentioned this was why you thought icl might be faster... Ergo, you
are responsible :-p
-Chris


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