Re: [PATCH RESEND v7 12/12] drm/i915: Move the GGTT from i915 private data to the GT

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Hi Matt,

On Mon, Dec 13, 2021 at 10:16:47AM -0800, Matt Roper wrote:
> On Sun, Dec 12, 2021 at 05:21:17PM +0200, Andi Shyti wrote:
> > GGTT was available both through i915->ggtt and gt->ggtt, and we
> > eventually want to get rid of the i915->ggtt one.
> > Move the GGTT from i915 to gt and use to_gt() for accesssing the
> > ggtt.
> > 
> > Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
> > Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
> > Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> > ---
> ...
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > index 14216cc471b1..02fc7641b82e 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > @@ -69,7 +69,7 @@ enum intel_submission_method {
> >  struct intel_gt {
> >  	struct drm_i915_private *i915;
> >  	struct intel_uncore *uncore;
> > -	struct i915_ggtt *ggtt;
> > +	struct i915_ggtt ggtt;
> >  
> >  	struct intel_uc uc;
> >  
> 
> I'm not sure this is the direction we want to go.  Although it works for
> the initial multi-tile support, there's some other stuff coming up soon
> that will require two intel_gt's to share the same ggtt rather than
> each having an independent one.

Sure... I sent this just to have an opinion, I'm dropping it.

Thanks,
Andi



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