linux-kernel - [PATCH v6 08/14] mips/kexec: refactor for kernel/Kconfig.kexec

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Message-Id: <20230712161545.87870-9-eric.devolder@oracle.com>
Date:   Wed, 12 Jul 2023 12:15:39 -0400
From:   Eric DeVolder <eric.devolder@...cle.com>
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Subject: [PATCH v6 08/14] mips/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: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
---
 arch/mips/Kconfig | 32 +++++---------------------------
 1 file changed, 5 insertions(+), 27 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index fc6fba925aea..bc8421859006 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2878,33 +2878,11 @@ config HZ
 config SCHED_HRTICK
 	def_bool HIGH_RES_TIMERS
 
-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.
-
-	  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"
-	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 or firmware using
-	  PHYSICAL_START.
+config ARCH_SUPPORTS_KEXEC
+	def_bool y
+
+config ARCH_SUPPORTS_CRASH_DUMP
+	def_bool y
 
 config PHYSICAL_START
 	hex "Physical address where the kernel is loaded"
-- 
2.31.1