[PATCH v2] kexec-xen: Allow xen_kexec_exec() to return in case of Live Update

[Simon Horman]

On Wed, Mar 23, 2022 at 02:44:18PM +0000, Raphael Ning wrote:
> From: Raphael Ning <raphning at amazon.com>
> 
> Currently, my_exec() does not expect the Xen KEXEC_CMD_kexec hypercall
> to return on success, because it assumes that the hypercall always
> triggers an immediate reboot. However, for Live Update, the hypercall
> merely schedules the kexec operation and returns; the actual reboot
> happens asynchronously. [1]
> 
> Therefore, rework the Xen code path of my_exec() such that it does not
> treat a successfully processed Live Update request as an error. Also,
> rephrase the comment above the function to remove ambiguity.
> 
> [1] https://lists.xen.org/archives/html/xen-devel/2021-05/msg00286.html
> 
> Signed-off-by: Raphael Ning <raphning at amazon.com>

Thanks, applied.