Re: [PATCH] drm/i915: Disable bonding on gen12+ platforms

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On Fri, Aug 06, 2021 at 08:54:59PM +0200, Daniel Vetter wrote:
> On Fri, Aug 6, 2021 at 8:25 PM John Harrison <john.c.harrison@xxxxxxxxx> wrote:
> > On 7/28/2021 12:21, Matthew Brost wrote:
> > > Disable bonding on gen12+ platforms aside from ones already supported by
> > > the i915 - TGL, RKL, and ADL-S.
> > >
> > > Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
> > > ---
> > >   drivers/gpu/drm/i915/gem/i915_gem_context.c | 7 +++++++
> > >   1 file changed, 7 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > > index 05c3ee191710..9c3672bac0e2 100644
> > > --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > > +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > > @@ -446,6 +446,13 @@ set_proto_ctx_engines_bond(struct i915_user_extension __user *base, void *data)
> > >       u16 idx, num_bonds;
> > >       int err, n;
> > >
> > > +     if (GRAPHICS_VER(i915) >= 12 && !IS_TIGERLAKE(i915) &&
> > > +         !IS_ROCKETLAKE(i915) && !IS_ALDERLAKE_S(i915)) {
> > > +             drm_dbg(&i915->drm,
> > > +                     "Bonding on gen12+ aside from TGL, RKL, and ADL_S not allowed\n");
> > I would have said not supported rather than not allowed. Either way:
> > Reviewed-by: John Harrison <John.C.Harrison@xxxxxxxxx>
> 
> Either is fine with me.
> 
> Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> 

Applied to drm-intel-gt-next (with the suggested debug message wording
tweak).  Thanks for the patch and reviews.


Matt

> >
> > > +             return -ENODEV;
> > > +     }
> > > +
> > >       if (get_user(idx, &ext->virtual_index))
> > >               return -EFAULT;
> > >
> >
> 
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch

-- 
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
(916) 356-2795



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