[Beignet] [PATCH] SKL: Use kernel-defined MOCS values instead of assuming hardware defaults.

[Francisco Jerez]

Reported to fix fix a ~50% performance regression (in OpenCV 3.0 and
Luxmark 2.1 among others) with v4.3 kernels on Gen9 hardware.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92975
Signed-off-by: Francisco Jerez <currojerez at riseup.net>
---
 src/intel/intel_gpgpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/intel/intel_gpgpu.c b/src/intel/intel_gpgpu.c
index 7f212e2..53a6dfc 100644
--- a/src/intel/intel_gpgpu.c
+++ b/src/intel/intel_gpgpu.c
@@ -285,9 +285,9 @@ intel_gpgpu_get_cache_ctrl_gen8()
 static uint32_t
 intel_gpgpu_get_cache_ctrl_gen9()
 {
-  //Pre-defined cache control registers 9:
+  //Kernel-defined cache control registers 2:
   //L3CC: WB; LeCC: WB; TC: LLC/eLLC;
-  return (0x9 << 1);
+  return (0x2 << 1);
 }
 
 static void
-- 
2.5.1