[PATCH v3 06/13] loongarch/kexec: refactor for kernel/Kconfig.kexec

From: Eric DeVolder
Date: Mon Jun 26 2023 - 12:14:51 EST


The kexec and crash kernel options are provided in the common
kernel/Kconfig.kexec. Utilize the common options and provide
the ARCH_SUPPORTS_ and ARCH_SELECTS_ entries to recreate the
equivalent set of KEXEC and CRASH options.

Signed-off-by: Eric DeVolder <eric.devolder@xxxxxxxxxx>
---
arch/loongarch/Kconfig | 26 +++++++-------------------
1 file changed, 7 insertions(+), 19 deletions(-)

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index d38b066fc931..3542bf669c78 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -481,28 +481,16 @@ config ARCH_STRICT_ALIGN
to run kernel only on systems with h/w unaligned access support in
order to optimise for performance.

-config KEXEC
- bool "Kexec system call"
- select KEXEC_CORE
- help
- kexec is a system call that implements the ability to shutdown your
- current kernel, and to start another kernel. It is like a reboot
- but it is independent of the system firmware. And like a reboot
- you can start any kernel with it, not just Linux.
+config ARCH_SUPPORTS_KEXEC
+ def_bool y

- The name comes from the similarity to the exec system call.
+config ARCH_SUPPORTS_CRASH_DUMP
+ def_bool y

-config CRASH_DUMP
- bool "Build kdump crash kernel"
+config ARCH_SELECTS_CRASH_DUMP
+ def_bool y
+ depends on CRASH_DUMP
select RELOCATABLE
- help
- Generate crash dump after being started by kexec. This should
- be normally only set in special crash dump kernels which are
- loaded in the main kernel with kexec-tools into a specially
- reserved region and then later executed after a crash by
- kdump/kexec.
-
- For more details see Documentation/admin-guide/kdump/kdump.rst

config RELOCATABLE
bool "Relocatable kernel"
--
2.31.1