!3598 arm64: add config switch and kernel parameter for cpu0 hotplug

Merge Pull Request from: @ci-robot 
 
PR sync from: Zheng Zengkai <zhengzengkai@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/WZRTN7AFXQLOPGO3YTLBNKIURSTQSEO3/ 
Some features depend on cpu0. Cpu0 offline may cause some problems or
malfunctions.
Known dependency may be:
MegaRAID Tri-Mode SAS3508 may block the reboot process after offline CPU0.

Add config switch and kernel parameter for CPU0 hotplug to avoid these issues
for arm64 platform.

Zheng Zengkai (2):
  arm64: Add config switch and kernel parameter for CPU0 hotplug
  config: disable config ARM64_BOOTPARAM_HOTPLUG_CPU0 by default


-- 
2.20.1
 
https://gitee.com/openeuler/kernel/issues/I8RJPO 
 
Link:https://gitee.com/openeuler/kernel/pulls/3598

 

Reviewed-by: Zhang Jianhua <chris.zjh@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Liu Chao <liuchao173@huawei.com>
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>