!6002 KVM: s390: vsie: fix race during shadow creation

Merge Pull Request from: @ci-robot 
 
PR sync from: Cui GaoSheng <cuigaosheng1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/NZZG7S75EVDZRIX6XWZBQ643VUF35DG7/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9E2GQ 
 
Link:https://gitee.com/openeuler/kernel/pulls/6002

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>