Commit 40445d06 authored by Eric DeVolder's avatar Eric DeVolder Committed by Andrew Morton
Browse files

sh/kexec: refactor for kernel/Kconfig.kexec 

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.

Link: https://lkml.kernel.org/r/20230712161545.87870-14-eric.devolder@oracle.com


Signed-off-by: default avatarEric DeVolder <eric.devolder@oracle.com>
Acked-by: default avatarJohn Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 75239cf7

arch/sh/Kconfig

+8 −38
Original line number Diff line number Diff line
@@ -548,44 +548,14 @@ menu "Kernel features" 


source "kernel/Kconfig.hz"



config KEXEC

	bool "kexec system call (EXPERIMENTAL)"

	depends on MMU

	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.



	  The name comes from the similarity to the exec system call.



	  It is an ongoing process to be certain the hardware in a machine

	  is properly shutdown, so do not be surprised if this code does not

	  initially work for you.  As of this writing the exact hardware

	  interface is strongly in flux, so no good recommendation can be

	  made.



config CRASH_DUMP

	bool "kernel crash dumps (EXPERIMENTAL)"

	depends on BROKEN_ON_SMP

	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. The crash dump kernel must be compiled

	  to a memory address not used by the main kernel using

	  PHYSICAL_START.



	  For more details see Documentation/admin-guide/kdump/kdump.rst



config KEXEC_JUMP

	bool "kexec jump (EXPERIMENTAL)"

	depends on KEXEC && HIBERNATION

	help

	  Jump between original kernel and kexeced kernel and invoke

	  code via KEXEC

config ARCH_SUPPORTS_KEXEC

	def_bool MMU



config ARCH_SUPPORTS_CRASH_DUMP

	def_bool BROKEN_ON_SMP



config ARCH_SUPPORTS_KEXEC_JUMP

	def_bool y



config PHYSICAL_START

	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)