linux-kernel - [PATCH v4 13/13] sh/kexec: refactor for kernel/Kconfig.kexec

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Message-Id: <20230705142004.3605799-14-eric.devolder@oracle.com>
Date:   Wed,  5 Jul 2023 10:20:04 -0400
From:   Eric DeVolder <eric.devolder@...cle.com>
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Subject: [PATCH v4 13/13] 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.

Signed-off-by: Eric DeVolder <eric.devolder@...cle.com>
Acked-by: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
---
 arch/sh/Kconfig | 46 ++++++++--------------------------------------
 1 file changed, 8 insertions(+), 38 deletions(-)

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 2b3ce4fd3956..1cf6603781c7 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -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)
-- 
2.31.1