[Intel-gfx] [PATCH] drm/i915: Restore global mappings upon resume

[Chris Wilson]

On Thu, Sep 26, 2013 at 09:04:53AM -0700, Ben Widawsky wrote:
> On Thu, Sep 26, 2013 at 09:22:45AM +0100, Chris Wilson wrote:
> > +		obj->has_global_gtt_mapping = false;
> > +		obj->has_aliasing_ppgtt_mapping = false;
> 
> Actually, the aliasing PPGTT mapping may very well still be in tact.
> Unless I'm not seeing something that you are.

I was about to agree with you, but we zap the PDEs in the clear_range()
above and don't otherwise restore them, so it looks like without that
optimisation we need to clear the ppgtt flag as well.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre