[PATCH] warn-on-userptr-ggtt

[Chris Wilson]

---
 drivers/gpu/drm/i915/i915_vma.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 9d5b0f87c210..2af9d7ffc6f4 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -105,6 +105,7 @@ vma_create(struct drm_i915_gem_object *obj,
 
 	/* The aliasing_ppgtt should never be used directly! */
 	GEM_BUG_ON(vm == &vm->i915->ggtt.alias->vm);
+	WARN_ON(i915_is_ggtt(vm) && obj->userptr.mm);
 
 	vma = i915_vma_alloc();
 	if (vma == NULL)
-- 
2.23.0