@@ -3280,9 +3280,11 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj,
WARN_ON(!list_is_singular(&obj->vma_list));
search_free:
+ /* FIXME: Some tests are failing when they receive a reloc of 0. To
+ * prevent this, we simply don't allow the 0th offset. */
ret = drm_mm_insert_node_in_range_generic(&vm->mm, &vma->node,
size, alignment,
- obj->cache_level, 0, gtt_max,
+ obj->cache_level, 1, gtt_max,
DRM_MM_SEARCH_DEFAULT);
if (ret) {
ret = i915_gem_evict_something(dev, vm, size, alignment,
This is primarily a band aid for an unexplainable error in gem_reloc_vs_gpu/forked-faulting-reloc-thrashing. Essentially as soon as a relocated buffer (which had a non-zero presumed offset) moved to offset 0, something goes bad. Since I have been unable to solve this, and potentially this is a good thing to do anyway, since many things can accidentally write to offset 0, why not? Signed-off-by: Ben Widawsky <ben@bwidawsk.net> --- drivers/gpu/drm/i915/i915_gem.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)