linux-kernel - Re: [PATCH v2] crash, powerpc: Default to CRASH_DUMP=n on PPC_BOOK3S

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Message-ID: <87ttecpbq1.fsf@mail.lhotse>
Date: Thu, 19 Sep 2024 13:24:22 +1000
From: Michael Ellerman <mpe@...erman.id.au>
To: Dave Vasilevsky <dave@...ilevsky.ca>, glaubitz@...sik.fu-berlin.de,
 bhe@...hat.com, linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org,
 kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
 ebiederm@...ssion.com
Cc: Dave Vasilevsky <dave@...ilevsky.ca>, Reimar Döffinger
 <Reimar.Doeffinger@....de>
Subject: Re: [PATCH v2] crash, powerpc: Default to CRASH_DUMP=n on
 PPC_BOOK3S_32

Dave Vasilevsky <dave@...ilevsky.ca> writes:
> 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.
>
> Signed-off-by: Dave Vasilevsky <dave@...ilevsky.ca>
> Reported-by: Reimar Döffinger <Reimar.Doeffinger@....de>
> Closes: https://lists.debian.org/debian-powerpc/2024/07/msg00001.html
> Fixes: 75bc255a7444 ("crash: clean up kdump related config items")
> ---
>  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(-)

Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

cheers