The patch titled
Subject: riscv/kexec: refactor for kernel/Kconfig.kexec
has been added to the -mm mm-nonmm-unstable branch. Its filename is
riscv-kexec-refactor-for-kernel-kconfigkexec.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/riscv-kexec-refactor-for-kernel-kconfigkexec.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Eric DeVolder <eric.devolder@xxxxxxxxxx>
Subject: riscv/kexec: refactor for kernel/Kconfig.kexec
Date: Thu, 6 Jul 2023 18:20:25 -0400
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/20230706222027.189117-12-eric.devolder@xxxxxxxxxx
Signed-off-by: Eric DeVolder <eric.devolder@xxxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/riscv/Kconfig | 48 +++++++++++++------------------------------
1 file changed, 15 insertions(+), 33 deletions(-)
--- a/arch/riscv/Kconfig~riscv-kexec-refactor-for-kernel-kconfigkexec
+++ a/arch/riscv/Kconfig
@@ -647,48 +647,30 @@ config RISCV_BOOT_SPINWAIT
If unsure what to do here, say N.
-config KEXEC
- bool "Kexec system call"
- depends on MMU
+config ARCH_SUPPORTS_KEXEC
+ def_bool MMU
+
+config ARCH_SELECTS_KEXEC
+ def_bool y
+ depends on KEXEC
select HOTPLUG_CPU if SMP
- 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.
-
-config KEXEC_FILE
- bool "kexec file based systmem call"
- depends on 64BIT && MMU
+
+config ARCH_SUPPORTS_KEXEC_FILE
+ def_bool 64BIT && MMU
+
+config ARCH_SELECTS_KEXEC_FILE
+ def_bool y
+ depends on KEXEC_FILE
select HAVE_IMA_KEXEC if IMA
- select KEXEC_CORE
select KEXEC_ELF
- help
- This is new version of kexec system call. This system call is
- file based and takes file descriptors as system call argument
- for kernel and initramfs as opposed to list of segments as
- accepted by previous system call.
-
- If you don't know what to do here, say Y.
config ARCH_HAS_KEXEC_PURGATORY
def_bool KEXEC_FILE
depends on CRYPTO=y
depends on CRYPTO_SHA256=y
-config CRASH_DUMP
- bool "Build kdump crash kernel"
- 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 ARCH_SUPPORTS_CRASH_DUMP
+ def_bool y
config COMPAT
bool "Kernel support for 32-bit U-mode"
_
Patches currently in -mm which might be from eric.devolder@xxxxxxxxxx are
kexec-consolidate-kexec-and-crash-options-into-kernel-kconfigkexec.patch
x86-kexec-refactor-for-kernel-kconfigkexec.patch
arm-kexec-refactor-for-kernel-kconfigkexec.patch
ia64-kexec-refactor-for-kernel-kconfigkexec.patch
arm64-kexec-refactor-for-kernel-kconfigkexec.patch
loongarch-kexec-refactor-for-kernel-kconfigkexec.patch
m68k-kexec-refactor-for-kernel-kconfigkexec.patch
mips-kexec-refactor-for-kernel-kconfigkexec.patch
parisc-kexec-refactor-for-kernel-kconfigkexec.patch
powerpc-kexec-refactor-for-kernel-kconfigkexec.patch
riscv-kexec-refactor-for-kernel-kconfigkexec.patch
s390-kexec-refactor-for-kernel-kconfigkexec.patch
sh-kexec-refactor-for-kernel-kconfigkexec.patch
