!4969 CVE-2021-46990

Merge Pull Request from: @ci-robot 
 
PR sync from: Lin Yujun <linyujun809@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/5IJ5A34WHSZI2NBOIL4GYJ4QVEBEENST/ 
*** BLURB HERE ***

Michael Ellerman (1):
  powerpc/64s: Fix crashes when toggling entry flush barrier


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2.34.1
 
https://gitee.com/src-openeuler/kernel/issues/I932VC 
 
Link:https://gitee.com/openeuler/kernel/pulls/4969

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Zhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>