[PATCH V2 1/2] kexec: return error of machine_kexec() fails

Stephen Warren swarren at wwwdotorg.org
Fri Jun 21 18:41:51 EDT 2013


On 06/12/2013 02:01 PM, Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> Prior to commit 3ab8352 "kexec jump", if machine_kexec() returned,
> sys_reboot() would return -EINVAL. This patch restores this behaviour
> for the non-KEXEC_JUMP case, where machine_kexec() is not expected to
> return.
> 
> This situation can occur on ARM, where kexec requires disabling all but
> one CPU using CPU hotplug. However, if hotplug isn't supported by the
> particular HW the kernel is running on, then kexec cannot succeed.

Eric, does this look reasonable to go into 3.11? Thanks.



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