644 	struct i915_ppgtt *ppgtt;  in init_aliasing_ppgtt()  local
647 	ppgtt = i915_ppgtt_create(ggtt->vm.gt);  in init_aliasing_ppgtt()
648 	if (IS_ERR(ppgtt))  in init_aliasing_ppgtt()
649 		return PTR_ERR(ppgtt);  in init_aliasing_ppgtt()
651 	if (GEM_WARN_ON(ppgtt->vm.total < ggtt->vm.total)) {  in init_aliasing_ppgtt()
656 	err = i915_vm_alloc_pt_stash(&ppgtt->vm, &stash, ggtt->vm.total);  in init_aliasing_ppgtt()
660 	i915_gem_object_lock(ppgtt->vm.scratch[0], NULL);  in init_aliasing_ppgtt()
661 	err = i915_vm_map_pt_stash(&ppgtt->vm, &stash);  in init_aliasing_ppgtt()
662 	i915_gem_object_unlock(ppgtt->vm.scratch[0]);  in init_aliasing_ppgtt()
672 	ppgtt->vm.allocate_va_range(&ppgtt->vm, &stash, 0, ggtt->vm.total);  in init_aliasing_ppgtt()
674 	ggtt->alias = ppgtt;  in init_aliasing_ppgtt()
675 	ggtt->vm.bind_async_flags |= ppgtt->vm.bind_async_flags;  in init_aliasing_ppgtt()
683 	i915_vm_free_pt_stash(&ppgtt->vm, &stash);  in init_aliasing_ppgtt()
687 	i915_vm_free_pt_stash(&ppgtt->vm, &stash);  in init_aliasing_ppgtt()
689 	i915_vm_put(&ppgtt->vm);  in init_aliasing_ppgtt()
695 	struct i915_ppgtt *ppgtt;  in fini_aliasing_ppgtt()  local
697 	ppgtt = fetch_and_zero(&ggtt->alias);  in fini_aliasing_ppgtt()
698 	if (!ppgtt)  in fini_aliasing_ppgtt()
701 	i915_vm_put(&ppgtt->vm);  in fini_aliasing_ppgtt()