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-rw-r--r--include/qom/object.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/qom/object.h b/include/qom/object.h
index 32524d72cc..405a2c67b0 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -691,6 +691,7 @@ struct Object
         .parent = TYPE_##PARENT_MODULE_OBJ_NAME, \
         .name = TYPE_##MODULE_OBJ_NAME, \
         .instance_size = sizeof(ModuleObjName), \
+        .instance_align = __alignof__(ModuleObjName), \
         .instance_init = module_obj_name##_init, \
         .instance_finalize = module_obj_name##_finalize, \
         .class_size = sizeof(ModuleObjName##Class), \
@@ -770,6 +771,9 @@ struct Object
  * @instance_size: The size of the object (derivative of #Object).  If
  *   @instance_size is 0, then the size of the object will be the size of the
  *   parent object.
+ * @instance_align: The required alignment of the object.  If @instance_align
+ *   is 0, then normal malloc alignment is sufficient; if non-zero, then we
+ *   must use qemu_memalign for allocation.
  * @instance_init: This function is called to initialize an object.  The parent
  *   class will have already been initialized so the type is only responsible
  *   for initializing its own members.
@@ -807,6 +811,7 @@ struct TypeInfo
     const char *parent;
 
     size_t instance_size;
+    size_t instance_align;
     void (*instance_init)(Object *obj);
     void (*instance_post_init)(Object *obj);
     void (*instance_finalize)(Object *obj);