[Intel-gfx] [PATCH] drm/i915: Reject bind_to_gtt() early if object > aperture

[Chris Wilson]

If the object is bigger than the entire aperture, reject it early
before evicting everything in a vain attempt to find space.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: stable at kernel.org
---
 drivers/gpu/drm/i915/i915_gem.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 9a73b20..f7f2520 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2694,6 +2694,14 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
 	if (alignment < fence_alignment)
 		alignment = fence_alignment;
 
+	/* If the object is bigger than the entire aperture, reject it early
+	 * before evicting everything in a vain attempt to find space.
+	 */
+	if (obj->size > dev->gtt_total) {
+		DRM_ERROR("Attempting to bind an object larger than the aperture\n");
+		return -ENOSPC;
+	}
+
  search_free:
 	free_space = drm_mm_search_free(&dev_priv->mm.gtt_space,
 					obj->size, alignment, 0);
-- 
1.7.1