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

[Ben Widawsky]

On Thu, Sep 26, 2013 at 05:16:53PM +0100, Chris Wilson wrote:
> 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
> 

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-- 
Ben Widawsky, Intel Open Source Technology Center