[Bug 90138] minor font corruption on baytrail since sna: Enable blitting with Y-tiled surfaces

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90138

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
That's kind of a relief, since I knew I hadn't fixed it :)

A useful test will be:

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 76e6913..110091d 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -84,7 +84,7 @@ search_snoop_cache(struct kgem *kgem, unsigned int num_pages,
unsigned flags);
 #define DBG_NO_HANDLE_LUT 0
 #define DBG_NO_WT 0
 #define DBG_NO_WC_MMAP 0
-#define DBG_NO_BLT_Y 0
+#define DBG_NO_BLT_Y 1
 #define DBG_NO_SCANOUT_Y 0
 #define DBG_NO_DETILING 0
 #define DBG_DUMP 0

that should filter out the use of the new magic bit.

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