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drm/i915: Reject huge tiled objects 

We do not yet support tiled objects bigger than the mappable
aperture size so reject them.

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
[danvet: Rework the check a bit to avoid warnings.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Joonas Lahtinen 2015-05-08 14:37:39 +03:00 committed by Daniel Vetter
parent 71849b67e7
commit e7ded2d746
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/i915/i915_gem.c
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@ -1669,8 +1669,10 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
}
/* Use a partial view if the object is bigger than the aperture. */
if (obj->base.size >= dev_priv->gtt.mappable_end) {
if (obj->base.size >= dev_priv->gtt.mappable_end &&
obj->tiling_mode == I915_TILING_NONE) {
static const unsigned int chunk_size = 256; // 1 MiB
memset(&view, 0, sizeof(view));
view.type = I915_GGTT_VIEW_PARTIAL;
view.params.partial.offset = rounddown(page_offset, chunk_size);