[Intel-gfx] [PATCH 3/3] drm/i915: Wait after context init with GuC Submission

[Chris Wilson]

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

-- 
Chris Wilson, Intel Open Source Technology Centre