@@ -335,12 +335,26 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp)
}
}
+static bool
+host_memory_backend_can_be_deleted(UserCreatable *uc, Error **errp)
+{
+ MemoryRegion *mr;
+
+ mr = host_memory_backend_get_memory(MEMORY_BACKEND(uc), errp);
+ if (memory_region_is_mapped(mr)) {
+ return false;
+ } else {
+ return true;
+ }
+}
+
static void
host_memory_backend_class_init(ObjectClass *oc, void *data)
{
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
ucc->complete = host_memory_backend_memory_complete;
+ ucc->can_be_deleted = host_memory_backend_can_be_deleted;
}
static const TypeInfo host_memory_backend_info = {
showing a memory device whose memdev is removed leads an assert: (qemu) object_add memory-backend-ram,id=ram0,size=128M (qemu) device_add pc-dimm,id=d0,memdev=ram0 (qemu) object_del ram0 (qemu) info memory-devices ** ERROR:qom/object.c:1274:object_get_canonical_path_component:\ assertion failed: (obj->parent != NULL) Aborted The patch prevents removing an in-use mem backend and error out. Signed-off-by: Lin Ma <lma@suse.com> --- backends/hostmem.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)