Re: [PATCH] drm/i915/gt: Restrict gen7 w/a batch to Haswell

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On Wed, Mar 11, 2020 at 12:57:32PM +0200, Mika Kuoppala wrote:
> Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
> 
> > The residual w/a batch is casing system instablity on Ivybridge and

little typo here                ^ ?

> > Baytrail under some workloads, so disable until resolved.
> >
> > Closes: https://gitlab.freedesktop.org/drm/intel/issues/1405
> > Fixes: 47f8253d2b89 ("drm/i915/gen7: Clear all EU/L3 residual contexts")
> > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> > Cc: Prathap Kumar Valsan <prathap.kumar.valsan@xxxxxxxxx>
> > Cc: Akeem G Abodunrin <akeem.g.abodunrin@xxxxxxxxx>
> > Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> > Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> 
> Acked-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> 
> > ---
> >  drivers/gpu/drm/i915/gt/intel_ring_submission.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> > index 1424582e4a9b..fdc3f10e12aa 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> > @@ -2088,7 +2088,7 @@ int intel_ring_submission_setup(struct intel_engine_cs *engine)
> >  
> >  	GEM_BUG_ON(timeline->hwsp_ggtt != engine->status_page.vma);
> >  
> > -	if (IS_GEN(engine->i915, 7) && engine->class == RENDER_CLASS) {
> > +	if (IS_HASWELL(engine->i915) && engine->class == RENDER_CLASS) {

this was out of the latest pull request for drm-next, but if that gets in
soon we might send with next-fixes...

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

> >  		err = gen7_ctx_switch_bb_init(engine);
> >  		if (err)
> >  			goto err_ring_unpin;
> > -- 
> > 2.20.1
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