[Intel-gfx] [PATCH] drm/i915: Be more informative when reporting "too large for aperture" error

[Chris Wilson]

This should help debugging the truly unexpected cases where it occurs -
in particular to see which value is garbage.

References: https://bugzilla.kernel.org/show_bug.cgi?id=58511
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 59349e3..38c8f11 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2993,7 +2993,10 @@ i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj,
 	 */
 	if (obj->base.size >
 	    (map_and_fenceable ? dev_priv->gtt.mappable_end : dev_priv->gtt.total)) {
-		DRM_ERROR("Attempting to bind an object larger than the aperture\n");
+		DRM_ERROR("Attempting to bind an object larger than the aperture: object=%ld > %s aperture=%ld\n",
+			  obj->base.size,
+			  map_and_fenceable ? "mappable" : "total",
+			  map_and_fenceable ? dev_priv->gtt.mappable_end : dev_priv->gtt.total);
 		return -E2BIG;
 	}
 
-- 
1.7.10.4