Re: [PATCH v8 7/9] drm/i915/gt: Ensure memory quiesced before invalidation for all engines

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On 24.07.2023 11:14, Andi Shyti wrote:
Hi Andrzej,

   	intel_engine_mask_t aux_inv = 0;
-	u32 cmd, *cs;
+	u32 cmd_flush = 0;
+	u32 cmd = 4;
+	u32 *cs;
-	cmd = 4;
-	if (mode & EMIT_INVALIDATE) {
+	if (mode & EMIT_INVALIDATE)
   		cmd += 2;
-		if (gen12_needs_ccs_aux_inv(rq->engine) &&
-		    (rq->engine->class == VIDEO_DECODE_CLASS ||
-		     rq->engine->class == VIDEO_ENHANCEMENT_CLASS)) {
-			aux_inv = rq->engine->mask &
-				~GENMASK(_BCS(I915_MAX_BCS - 1), BCS0);
-			if (aux_inv)
-				cmd += 4;
-		}
+	if (gen12_needs_ccs_aux_inv(rq->engine))
+		aux_inv = rq->engine->mask &
+			  ~GENMASK(_BCS(I915_MAX_BCS - 1), BCS0);
Shouldn't we remove BCS check for MTL? And move it inside
gen12_needs_ccs_aux_inv?
Btw aux_inv is used as bool, make better is to make it bool.
Both the cleanups come in patch 9. I wanted to move it initially
before, but per engine check come later in the series.

I think would need to re-architecture all the patch structure if
I want to remove it :)

Are you strong with this change?

Nope, if it finally arrives then OK for me.

Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>

Regards
Andrzej




Andi




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