Patch "drm/amdgpu: mask out WC from BO on unsupported arches" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

drm/amdgpu: mask out WC from BO on unsupported arches

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-amdgpu-mask-out-wc-from-bo-on-unsupported-arches.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Oded Gabbay <[email protected]>
Date: Sat, 30 Jan 2016 07:59:34 +0200
Subject: drm/amdgpu: mask out WC from BO on unsupported arches
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From: Oded Gabbay <[email protected]>

commit a187f17f0e15a046aa5d7263b35df55230d92779 upstream.

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c |    8 ++++++++
 1 file changed, 8 insertions(+)

@@ -33,6 +33,7 @@
 #include <linux/slab.h>
 #include <drm/drmP.h>
 #include <drm/amdgpu_drm.h>
+#include <drm/drm_cache.h>
 #include "amdgpu.h"
 #include "amdgpu_trace.h"
 

@@ -261,6 +262,13 @@ int amdgpu_bo_create_restricted(struct a
 				       AMDGPU_GEM_DOMAIN_OA);
 
 	bo->flags = flags;
+
+	/* For architectures that don't support WC memory,
+	 * mask out the WC flag from the BO
+	 */
+	if (!drm_arch_can_wc_memory())
+		bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
+
 	amdgpu_fill_placement_to_bo(bo, placement);
 	/* Kernel allocation are uninterruptible */
 	r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type,

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/drm-amdgpu-mask-out-wc-from-bo-on-unsupported-arches.patch