[Bug 61477] [965g] batch corruption, clflush?

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61477

--- Comment #27 from Chris Wilson <chris at chris-wilson.co.uk> ---
Can you please refresh my memory on what the corruption looks like with a
screenshot or photograph? It would also be interesting to note if the
corruption is not apparent in a screenshot.

To undo the optimisation again, apply:

diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index a3e4ed4..4b091f3 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -58,7 +58,7 @@
 #define FORCE_INPLACE 0
 #define FORCE_FALLBACK 0
 #define FORCE_FLUSH 0
-#define FORCE_FULL_SYNC 0 /*
https://bugs.freedesktop.org/show_bug.cgi?id=61628 */
+#define FORCE_FULL_SYNC 1 /*
https://bugs.freedesktop.org/show_bug.cgi?id=61628 */

 #define DEFAULT_TILING I915_TILING_X

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