Re: [PATCH 1/3] drm/i915/gem: Use chained reloc batches

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Quoting Chris Wilson (2020-05-01 13:38:03)
> Quoting Tvrtko Ursulin (2020-05-01 13:33:14)
> > 
> > On 01/05/2020 11:18, Chris Wilson wrote:
> > > +
> > > +     err = 0;
> > > +     if (rq->engine->emit_init_breadcrumb)
> > > +             err = rq->engine->emit_init_breadcrumb(rq);
> > > +     if (!err)
> > > +             err = rq->engine->emit_bb_start(rq,
> > > +                                             rq->batch->node.start,
> > > +                                             PAGE_SIZE,
> > > +                                             reloc_bb_flags(cache));
> > > +     if (err)
> > > +             i915_request_set_error_once(rq, err);
> > 
> > Will this error propagate and fail the execbuf?
> 
> It fails the execution, but not the execbuf... I was thinking it was too
> late for the execbuf, but return err at the end propagates nicely!

This is much easier in #2, so I'll let the bug slide for a patch.
-Chris
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