kernel/F-10/drm-intel-gem-use-dma32-on-pae.patch

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 4984aa8..ae52edc 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -142,6 +142,9 @@ drm_gem_object_alloc(struct drm_device *dev, size_t size)
 		return NULL;
 	}
 
+	if (dev->gem_flags)
+		mapping_set_gfp_mask(obj->filp->f_mapping, dev->gem_flags);
+
 	kref_init(&obj->refcount);
 	kref_init(&obj->handlecount);
 	obj->size = size;
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 8161343..049fc3f 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1145,12 +1145,12 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	}
 
 #ifdef CONFIG_HIGHMEM64G
-	/* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */
-	dev_priv->has_gem = 0;
-#else
+	/* set default allocation flags */
+	dev->gem_flags = GFP_USER | GFP_DMA32;
+#endif
+
 	/* enable GEM by default, except on I8xx */
 	dev_priv->has_gem = !IS_I8XX(dev) ? 1 : 0;
-#endif
 
 	dev->driver->get_vblank_counter = i915_get_vblank_counter;
 	if (IS_GM45(dev))
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 04fbd1e..018534b 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1043,6 +1043,7 @@ struct drm_device {
 	uint32_t gtt_total;
 	uint32_t invalidate_domains;    /* domains pending invalidation */
 	uint32_t flush_domains;         /* domains pending flush */
+	gfp_t gem_flags;		/* object allocation flags */
 	/*@} */
 };
 
diff --git a/mm/shmem.c b/mm/shmem.c
index 4103a23..515bb1b 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1226,7 +1226,7 @@ repeat:
 		 * Try to preload while we can wait, to not make a habit of
 		 * draining atomic reserves; but don't latch on to this cpu.
 		 */
-		error = radix_tree_preload(gfp & ~__GFP_HIGHMEM);
+		error = radix_tree_preload(gfp & ~(__GFP_HIGHMEM|__GFP_DMA32));
 		if (error)
 			goto failed;
 		radix_tree_preload_end();
1	diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
2	index 4984aa8..ae52edc 100644
3	--- a/drivers/gpu/drm/drm_gem.c
4	+++ b/drivers/gpu/drm/drm_gem.c
5	@@ -142,6 +142,9 @@ drm_gem_object_alloc(struct drm_device *dev, size_t size)
6	return NULL;
7	}
8
9	+ if (dev->gem_flags)
10	+ mapping_set_gfp_mask(obj->filp->f_mapping, dev->gem_flags);
11	+
12	kref_init(&obj->refcount);
13	kref_init(&obj->handlecount);
14	obj->size = size;
15	diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
16	index 8161343..049fc3f 100644
17	--- a/drivers/gpu/drm/i915/i915_dma.c
18	+++ b/drivers/gpu/drm/i915/i915_dma.c
19	@@ -1145,12 +1145,12 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
20	}
21
22	#ifdef CONFIG_HIGHMEM64G
23	- /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */
24	- dev_priv->has_gem = 0;
25	-#else
26	+ /* set default allocation flags */
27	+ dev->gem_flags = GFP_USER \| GFP_DMA32;
28	+#endif
29	+
30	/* enable GEM by default, except on I8xx */
31	dev_priv->has_gem = !IS_I8XX(dev) ? 1 : 0;
32	-#endif
33
34	dev->driver->get_vblank_counter = i915_get_vblank_counter;
35	if (IS_GM45(dev))
36	diff --git a/include/drm/drmP.h b/include/drm/drmP.h
37	index 04fbd1e..018534b 100644
38	--- a/include/drm/drmP.h
39	+++ b/include/drm/drmP.h
40	@@ -1043,6 +1043,7 @@ struct drm_device {
41	uint32_t gtt_total;
42	uint32_t invalidate_domains; /* domains pending invalidation */
43	uint32_t flush_domains; /* domains pending flush */
44	+ gfp_t gem_flags; /* object allocation flags */
45	/@} /
46	};
47
48	diff --git a/mm/shmem.c b/mm/shmem.c
49	index 4103a23..515bb1b 100644
50	--- a/mm/shmem.c
51	+++ b/mm/shmem.c
52	@@ -1226,7 +1226,7 @@ repeat:
53	* Try to preload while we can wait, to not make a habit of
54	* draining atomic reserves; but don't latch on to this cpu.
55	*/
56	- error = radix_tree_preload(gfp & ~__GFP_HIGHMEM);
57	+ error = radix_tree_preload(gfp & ~(__GFP_HIGHMEM\|__GFP_DMA32));
58	if (error)
59	goto failed;
60	radix_tree_preload_end();
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