The option CRASH_HOTPLUG enables, in kernel update to kexec segments on hotplug events. All the updates needed on the capture kernel load path in the kernel for both kexec_load and kexec_file_load system will be kept under this config. Signed-off-by: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx> --- arch/powerpc/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b779603978e1..b816339ef8c7 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -623,6 +623,17 @@ config FA_DUMP If unsure, say "y". Only special kernels like petitboot may need to say "N" here. +config CRASH_HOTPLUG + bool "kernel updates of crash kexec segments" + depends on CRASH_DUMP && (HOTPLUG_CPU) && KEXEC_FILE + help + An efficient way to keep the capture kernel up-to-date with CPU + hotplug events. On hotplug event (CPU/memory) the kexec segments + of capture kernel becomes stale and need to be updated with latest + CPU and memory regions. In this method the kernel performs minimal + update to only relevant kexec segments on CPU hotplug event, instead + of triggering full capture reload from userspace using udev rule. + config PRESERVE_FA_DUMP bool "Preserve Firmware-assisted dump" depends on PPC64 && PPC_POWERNV && !FA_DUMP -- 2.35.1 _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
