[Intel-gfx] [PATCH 3/3] drm/i915: Wait after context init with GuC Submission
peter.antoine at intel.com
Mon Jan 11 07:48:30 PST 2016
Please ignore this patch.
It is really part of the pre-emption series. Was included as is being used in Android.
From: Chris Wilson [mailto:chris at chris-wilson.co.uk]
Sent: Friday, January 8, 2016 3:20 PM
To: Antoine, Peter
Cc: intel-gfx at lists.freedesktop.org; daniel.vetter at ffwll.ch; Gordon, Dave
Subject: Re: [Intel-gfx] [PATCH 3/3] drm/i915: Wait after context init with GuC Submission
On Fri, Jan 08, 2016 at 03:03:54PM +0000, Peter Antoine wrote:
> Per-context initialisation GPU instructions (which are injected
> directly into the ringbuffer rather than being submitted as a batch)
> should not be allowed to mix with user-generated batches in the same
> submission; it will cause confusion for the GuC (which might merge a
> subsequent preemptive request with the non-preemptive initialisation
> code), and for the scheduler, which wouldn't know how to re-inject a
> non-batch request if it were the victim of preemption.
Move the context init into the first request. Problem solved.
Chris Wilson, Intel Open Source Technology Centre
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