From c65ff10063a6c599b88cba27fd70a72e2e0cc0ff Mon Sep 17 00:00:00 2001
From: Jinhua Cao <caojinhua1@huawei.com>
Date: Thu, 10 Feb 2022 20:21:33 +0800
Subject: [PATCH] vhost-user: add unregister_savevm when vhost-user cleanup

commit 12cf5e9ece ("vhost-user: add vhost_set_mem_table
when vm load_setup at destination") only register savevm
handler but not unregister it, which will cause the
number of handers increase when vhost-user devices hotplug,
so this commit add unregister_savevm when vhost-user cleanup.

Fixes: 12cf5e9ece ("vhost-user: add vhost_set_mem_table when vm load_setup at destination")
Signed-off-by: Jinhua Cao <caojinhua1@huawei.com>
---
 hw/virtio/vhost-user.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 6739dfc98e..e589ee3572 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -2310,6 +2310,7 @@ static int vhost_user_backend_cleanup(struct vhost_dev *dev)
     u->region_rb_len = 0;
     g_free(u);
     dev->opaque = 0;
+    unregister_savevm(NULL, "vhost-user", dev);
 
     return 0;
 }
-- 
2.27.0