[PATCH v3 0/3] Enable crash hotplug support on powerpc

[Simon Horman]

On Sun, Jul 07, 2024 at 08:54:53PM +0530, Sourabh Jain wrote:
> The primary goal of this patch series is to enable crash hotplug on
> powerpc architecture for the `kexec_load` system call.
> 
> The first patch in the series introduces a new kexec flag added in the
> kernel to generalize crash hotplug support. The second patch enables
> crash hotplug support on PowerPC for `kexec_load` system call. The third
> patch updates the documentation about crash hotplug support.
> 
> Changes log:
> 
> v4:
>   - Do not remove the KEXEC_UPDATE_ELFCOREHDR kexec flag. It is needed to
>     maintain backward compatibility on x86. 1/3
>   - Send the KEXEC_UPDATE_ELFCOREHDR kexec flag for x86, and for the rest
>     of the architectures, send KEXEC_CRASH_HOTPLUG_SUPPORT to enable
>     crash hotplug support kexec_load system call. 1/3
>   - Since there is a significant change in 1/3, hence Hari's Acked-by
>     is removed form only first patch. 1/3
>   - Rename and reorder the function arch_do_exclude_segment() parameters
>     as suggested. 1/3
>   - Keep the implementation of arch_do_exclude_segment() function same
>     for x86_64 and i386. 1/3
> 
> v3:
>   https://lists.infradead.org/pipermail/kexec/2024-July/030361.html
>   - Updated --hotplug option description 3/3
> 
> v2:
>   https://lists.infradead.org/pipermail/kexec/2024-June/030309.html
>   - Find CPUs in the system using the /sys/devices/system/cpu/present sysfs
>     instead of traversing all nodes under /proc/device-tree/cpus. 2/3
>   - Added a new function to find present CPUs in the system. 2/3
>   - Removed unnecessary NULL check on seg_ptr from arch_do_exclude_segment(). 2/3
>   - Updated --hotplug option description 3/3
> 
> v1:
>   https://lists.infradead.org/pipermail/kexec/2024-May/030051.html

Thanks Sourabh,

Series applied.