Commit 4183635e authored by Eric DeVolder's avatar Eric DeVolder Committed by Andrew Morton
Browse files

arm/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/20230712161545.87870-4-eric.devolder@oracle.com


Signed-off-by: default avatarEric DeVolder <eric.devolder@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 6af51380

arch/arm/Kconfig

+4 −25
Original line number Diff line number Diff line
@@ -1645,20 +1645,8 @@ config XIP_DEFLATED_DATA 
	  copied, saving some precious ROM space. A possible drawback is a

	  slightly longer boot delay.



config KEXEC

	bool "Kexec system call (EXPERIMENTAL)"

	depends on (!SMP || PM_SLEEP_SMP)

	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.



	  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.

config ARCH_SUPPORTS_KEXEC

	def_bool (!SMP || PM_SLEEP_SMP) && MMU



config ATAGS_PROC

	bool "Export atags in procfs"
@@ -1668,17 +1656,8 @@ config ATAGS_PROC 
	  Should the atags used to boot the kernel be exported in an "atags"

	  file in procfs. Useful with kexec.



config CRASH_DUMP

	bool "Build kdump crash kernel (EXPERIMENTAL)"

	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



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

config ARCH_SUPPORTS_CRASH_DUMP

	def_bool y



config AUTO_ZRELADDR

	bool "Auto calculation of the decompressed kernel image address" if !ARCH_MULTIPLATFORM