Hi Fei, On Wed, Apr 19, 2023 at 12:59:09PM +0200, Andi Shyti wrote: > Hi Fei, > > > --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c > > +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c > > @@ -743,6 +743,13 @@ struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size) > > if (IS_ERR(obj)) > > return ERR_CAST(obj); > > > > + /* > > + * Wa_22016122933: For MTL the shared memory needs to be mapped > > + * as WC on CPU side and UC (PAT index 2) on GPU side > > Isn't UC PAT index 3? Sorry, it's 2... I was reading the wrong table. Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx> Andi