vm: controller: implement detach of vm-object whose attachment was deferred

2026-04-01 18:35:08 +01:00
parent 2cbfa7d7d2
commit c8202c6741
1 changed files with 9 additions and 0 deletions
@@ -216,6 +216,15 @@ kern_status_t vm_controller_detach_object(
 		return KERN_INVALID_ARGUMENT;
 	}
 	if (vmo->vo_key == 0) {
 		/* this vmo isn't actually attached to this controller yet.
 		 * this can happen if a controller-attached vmo was duplicated
 		 * via copy-on-write, and the duplicate vmo has not yet been
 		 * accessed. */
 		vmo->vo_ctrl = NULL;
 		return KERN_OK;
 	}
 	struct page_request *req
 		= vm_cache_alloc(&page_request_cache, VM_NORMAL);
 	req->req_type = PAGE_REQUEST_DETACH;