Quoting Andi Shyti (2019-12-07 00:03:27)
> Hi Chris,
>
> [...]
>
> > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_domain.c
> > b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
> > index 808eb327a29b..53e28e417cc9 100644
> > --- a/drivers/gpu/drm/i915/gem/i915_gem_domain.c
> > +++ b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
> > @@ -187,21 +187,23 @@ int i915_gem_object_set_cache_level(struct
> > drm_i915_gem_object *obj,
> > {
> > int ret;
> >
> > - assert_object_held(obj);
> > -
> > if (obj->cache_level == cache_level)
>
> you're checking here...
>
> > return 0;
> >
> > - ret = i915_gem_object_unbind(obj, I915_GEM_OBJECT_UNBIND_ACTIVE);
> > + ret = i915_gem_object_lock_interruptible(obj);
> > if (ret)
> > return ret;
> >
> > - /* The cache-level will be applied when each vma is rebound. */
> > + /* Always invalidate stale cachelines */
> > + if (obj->cache_level != cache_level) {
>
> ... and here... you might want to get rid of this one?
One outside, one inside the lock.
-Chris
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