Commit bed1ea95 authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
Browse files

drm/i915: Limit page allocations to lowmem (dma32) for i965

Broadwater and Crestline share a limitation that prevent it from
relocating general surface state above 4GiB. The only recourse we have
since any buffer object may be used as a relocation target is then to
limit all object allocations on 965g[m] to DMA32.
Signed-off-by: default avatarChris Wilson <>
Signed-off-by: default avatarDaniel Vetter <>
parent 89ba829e
......@@ -3263,6 +3263,7 @@ struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj;
struct address_space *mapping;
u32 mask;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (obj == NULL)
......@@ -3273,8 +3274,15 @@ struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
return NULL;
if (IS_CRESTLINE(dev) || IS_BROADWATER(dev)) {
/* 965gm cannot relocate objects above 4GiB. */
mask &= ~__GFP_HIGHMEM;
mask |= __GFP_DMA32;
mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
mapping_set_gfp_mask(mapping, GFP_HIGHUSER | __GFP_RECLAIMABLE);
mapping_set_gfp_mask(mapping, mask);
i915_gem_info_add_obj(dev_priv, size);
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