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...
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@vasilevsky.ca 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@vasilevsky.ca Fixes: 75bc255a7444 ("crash: clean up kdump related config items") Signed-off-by: Dave Vasilevsky dave@vasilevsky.ca Reported-by: Reimar D��ffinger Reimar.Doeffinger@gmx.de Closes: https://lists.debian.org/debian-powerpc/2024/07/msg00001.html Acked-by: Michael Ellerman mpe@ellerman.id.au [powerpc] Acked-by: Baoquan He bhe@redhat.com Cc: "Eric W. Biederman" ebiederm@xmission.com Cc: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Cc: Reimar D��ffinger Reimar.Doeffinger@gmx.de Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
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@vasilevsky.ca are
crash-powerpc-default-to-crash_dump=n-on-ppc_book3s_32.patch