[Intel-gfx] [PATCH] drm/i915: Actually make per-fd contexts useful

[Mika Kuoppala]

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

> On Wed, Jan 21, 2015 at 12:11:11PM +0100, Daniel Vetter wrote:
>> This goes back to when there was just one global context, when
>> restoring kinda didn't make sense.
>> 
>> Also with execlist we already have these semantics, so better to be a
>> bit more consistent.
>
> Where are the benchmark results? The context switch has angered QA
> before...
>

What if we isolate fds and context by default but then let clients
choose, by using per-context parameter, if they are ok with leftover
state. From other context owned by them, or optionally even from
other clients.

- Mika

> Do we even have an igt context switch microbenchmark?
> -Chris
>
> -- 
> Chris Wilson, Intel Open Source Technology Centre