Re: [PATCH 12/12] drm/i915: No contexts without ppgtt

[Ben Widawsky <ben@bwidawsk.net>]

On Wed, Apr 24, 2013 at 11:06:12AM +0100, Chris Wilson wrote:
> On Tue, Apr 23, 2013 at 11:15:40PM -0700, Ben Widawsky wrote:
> > Going forward, every context will have its own address space. So rip off
> > the band aid now. If contexts fail, don't do ppgtt, and vice versa.
> > 
> > Similarly to the last patch, this is somewhat wasteful of PPGTT address
> > space with contexts, since we're not actually utilizing the new PPGTT.
> 
> What strategy do we have for isolating bugs between ctx and ppggt? I'd
> like to be able disable each of them independently and together.
> -Chris

None.

Up through the end of this series we have the ability to turn off:
PPGTT or Contexts & PPGTT.

Given our history, I think that probably concerns you more than PPGTT. I
don't know how to make you feel better.AFAIK, Mesa plans to become
dependent on contexts anyway, so having a way of backing out of that,
even for debug, seems to be of limited use to me.

> 
> -- 
> Chris Wilson, Intel Open Source Technology Centre

-- 
Ben Widawsky, Intel Open Source Technology Center