Re: [PATCH 19/33] drm/i915: Only clflush the context object when binding

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On su, 2016-08-07 at 15:45 +0100, Chris Wilson wrote:
> @@ -771,6 +771,13 @@ static int do_rcs_switch(struct drm_i915_gem_request *req)
>  	if (skip_rcs_switch(ppgtt, engine, to))
>  		return 0;
>  
> +	if (!(to->engine[RCS].state->flags & I915_VMA_GLOBAL_BIND)) {
> +		ret = i915_gem_object_set_to_gtt_domain(to->engine[RCS].state->obj,
> +							false);
> +		if (ret)
> +			return ret;
> +	}
> +
>  	/* Trying to pin first makes error handling easier. */
>  	ret = i915_vma_pin(to->engine[RCS].state,
>  			   0, to->ggtt_alignment,

This could be lifted inside the if?

> @@ -790,11 +797,6 @@ static int do_rcs_switch(struct drm_i915_gem_request *req)
>  	/*
>  	 * Clear this page out of any CPU caches for coherent swap-in/out.
>  	 */

Move/update the comment too?

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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