The patch titled
Subject: crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Dave Vasilevsky <dave@xxxxxxxxxxxxx>
Subject: crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32
Date: Tue, 17 Sep 2024 12:37:20 -0400
Fixes boot failures on 6.9 on PPC_BOOK3S_32 machines using Open Firmware.
On these machines, the kernel refuses to boot from non-zero
PHYSICAL_START, which occurs when CRASH_DUMP is on.
Since most PPC_BOOK3S_32 machines boot via Open Firmware, it should
default to off for them. Users booting via some other mechanism can still
turn it on explicitly.
Does not change the default on any other architectures for the
time being.
Link: https://lkml.kernel.org/r/20240917163720.1644584-1-dave@xxxxxxxxxxxxx
Fixes: 75bc255a7444 ("crash: clean up kdump related config items")
Signed-off-by: Dave Vasilevsky <dave@xxxxxxxxxxxxx>
Reported-by: Reimar Döffinger <Reimar.Doeffinger@xxxxxx>
Closes: https://lists.debian.org/debian-powerpc/2024/07/msg00001.html
Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> [powerpc]
Acked-by: Baoquan He <bhe@xxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Reimar Döffinger <Reimar.Doeffinger@xxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/Kconfig | 3 +++
arch/arm64/Kconfig | 3 +++
arch/loongarch/Kconfig | 3 +++
arch/mips/Kconfig | 3 +++
arch/powerpc/Kconfig | 4 ++++
arch/riscv/Kconfig | 3 +++
arch/s390/Kconfig | 3 +++
arch/sh/Kconfig | 3 +++
arch/x86/Kconfig | 3 +++
kernel/Kconfig.kexec | 2 +-
10 files changed, 29 insertions(+), 1 deletion(-)
--- a/arch/arm64/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/arm64/Kconfig
@@ -1576,6 +1576,9 @@ config ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_S
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
def_bool CRASH_RESERVE
--- a/arch/arm/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/arm/Kconfig
@@ -1598,6 +1598,9 @@ config ATAGS_PROC
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config AUTO_ZRELADDR
bool "Auto calculation of the decompressed kernel image address" if !ARCH_MULTIPLATFORM
default !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
--- a/arch/loongarch/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/loongarch/Kconfig
@@ -604,6 +604,9 @@ config ARCH_SUPPORTS_KEXEC
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_SELECTS_CRASH_DUMP
def_bool y
depends on CRASH_DUMP
--- a/arch/mips/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/mips/Kconfig
@@ -2876,6 +2876,9 @@ config ARCH_SUPPORTS_KEXEC
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config PHYSICAL_START
hex "Physical address where the kernel is loaded"
default "0xffffffff84000000"
--- a/arch/powerpc/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/powerpc/Kconfig
@@ -684,6 +684,10 @@ config RELOCATABLE_TEST
config ARCH_SUPPORTS_CRASH_DUMP
def_bool PPC64 || PPC_BOOK3S_32 || PPC_85xx || (44x && !SMP)
+config ARCH_DEFAULT_CRASH_DUMP
+ bool
+ default y if !PPC_BOOK3S_32
+
config ARCH_SELECTS_CRASH_DUMP
def_bool y
depends on CRASH_DUMP
--- a/arch/riscv/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/riscv/Kconfig
@@ -898,6 +898,9 @@ config ARCH_SUPPORTS_KEXEC_PURGATORY
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
def_bool CRASH_RESERVE
--- a/arch/s390/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/s390/Kconfig
@@ -276,6 +276,9 @@ config ARCH_SUPPORTS_CRASH_DUMP
This option also enables s390 zfcpdump.
See also <file:Documentation/arch/s390/zfcpdump.rst>
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
menu "Processor type and features"
config HAVE_MARCH_Z10_FEATURES
--- a/arch/sh/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/sh/Kconfig
@@ -550,6 +550,9 @@ config ARCH_SUPPORTS_KEXEC
config ARCH_SUPPORTS_CRASH_DUMP
def_bool BROKEN_ON_SMP
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_SUPPORTS_KEXEC_JUMP
def_bool y
--- a/arch/x86/Kconfig~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/arch/x86/Kconfig
@@ -2084,6 +2084,9 @@ config ARCH_SUPPORTS_KEXEC_JUMP
config ARCH_SUPPORTS_CRASH_DUMP
def_bool X86_64 || (X86_32 && HIGHMEM)
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_SUPPORTS_CRASH_HOTPLUG
def_bool y
--- a/kernel/Kconfig.kexec~crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32
+++ a/kernel/Kconfig.kexec
@@ -97,7 +97,7 @@ config KEXEC_JUMP
config CRASH_DUMP
bool "kernel crash dumps"
- default y
+ default ARCH_DEFAULT_CRASH_DUMP
depends on ARCH_SUPPORTS_CRASH_DUMP
depends on KEXEC_CORE
select VMCORE_INFO
_
Patches currently in -mm which might be from dave@xxxxxxxxxxxxx are
crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32.patch
