[Intel-gfx] [PATCH] drm/i915/execlists: Enable coarse preemption boundaries for gen8

[Chris Wilson]

Quoting Tvrtko Ursulin (2019-04-05 10:46:19)
> 
> On 29/03/2019 13:40, Chris Wilson wrote:
> > +static int gen9_emit_bb_start(struct i915_request *rq,
> > +                           u64 offset, u32 len,
> > +                           const unsigned int flags)
> > +{
> > +     u32 *cs;
> > +
> > +     cs = intel_ring_begin(rq, 6);
> > +     if (IS_ERR(cs))
> > +             return PTR_ERR(cs);
> > +
> >       *cs++ = MI_ARB_ON_OFF | MI_ARB_ENABLE;
> >   
> >       /* FIXME(BDW): Address space and security selectors. */
> 
> This comment can now be removed.

I didn't check, but I presumed gen9+ still has those bits which we were
ignoring. However, if we ever get around to looking at it, the comment
in gen8 should suffice.
-Chris