From: "Arnd Bergmann" <arnd@arndb.de>
To: "Eric DeVolder" <eric.devolder@oracle.com>,
"Russell King" <linux@armlinux.org.uk>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
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Cc: Peter Zijlstra <peterz@infradead.org>,
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Mike Rapoport <rppt@kernel.org>
Subject: Re: [PATCH v4 03/13] arm/kexec: refactor for kernel/Kconfig.kexec
Date: Wed, 05 Jul 2023 17:53:02 +0200 [thread overview]
Message-ID: <622eee1a-4bf3-4a17-9c2e-e32f0f405fd5@app.fastmail.com> (raw)
In-Reply-To: <6ac04399-9c17-b036-5b14-92eadb65522b@oracle.com>
On Wed, Jul 5, 2023, at 17:22, Eric DeVolder wrote:
> On 7/5/23 10:05, Arnd Bergmann wrote:
>> On Wed, Jul 5, 2023, at 16:19, Eric DeVolder wrote:
>>
>> I see this is now in linux-next, and it caused a few randconfig
>> build issues, these never happened in the past:
>
> Arnd,
> Thanks for looking at this!
>
> I received randconfig errors from Andrew Morton's machinery. When
> investigating I
> found that randconfig was able to specify CRASH_DUMP without KEXEC, and
> that lead
> to problems. I believe this situation existed prior to this series as
> well.
On Arm, there was definitely a bug because one could enable CRASH_DUMP
without enabling KEXEC, but that had no effect at all. I only noticed
the problem testing linux-next because it turned from silently broken
into a build failure
> Specifically CRASH_DUMP does not have a dependency on KEXEC, or select
> (only s390
> has this hole closed).
>
> For CRASH_DUMP, this series now selects KEXEC to close this gap, which is what a
> sane config would have (ie both CRASH_DUMP and KEXEC).
Right, that is the easier way out here.
> Do you think the changes outlined below are still needed?
I think only the first one still applies on arm, you need to ensure
that ARCH_SUPPORTS_CRASH_DUMP has the same dependency as
ARCH_SUPPORTS_KEXEC, or it just depends on ARCH_SUPPORTS_KEXEC.
Arnd
next prev parent reply other threads:[~2023-07-05 22:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-05 14:19 [PATCH v4 00/13] refactor Kconfig to consolidate KEXEC and CRASH options Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 01/13] kexec: consolidate kexec and crash options into kernel/Kconfig.kexec Eric DeVolder
2023-07-06 12:18 ` Arnd Bergmann
2023-07-06 12:23 ` Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 02/13] x86/kexec: refactor for kernel/Kconfig.kexec Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 03/13] arm/kexec: " Eric DeVolder
2023-07-05 15:05 ` Arnd Bergmann
2023-07-05 15:22 ` Eric DeVolder
2023-07-05 15:53 ` Arnd Bergmann [this message]
2023-07-05 14:19 ` [PATCH v4 04/13] ia64/kexec: " Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 05/13] arm64/kexec: " Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 06/13] loongarch/kexec: " Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 07/13] m68k/kexec: " Eric DeVolder
2023-07-05 14:19 ` [PATCH v4 08/13] mips/kexec: " Eric DeVolder
2023-07-05 14:20 ` [PATCH v4 09/13] parisc/kexec: " Eric DeVolder
2023-07-05 14:20 ` [PATCH v4 10/13] powerpc/kexec: " Eric DeVolder
2023-07-05 14:20 ` [PATCH v4 11/13] riscv/kexec: " Eric DeVolder
2023-07-05 14:20 ` [PATCH v4 12/13] s390/kexec: " Eric DeVolder
2023-07-05 15:49 ` Nathan Chancellor
2023-07-05 16:23 ` Eric DeVolder
2023-07-05 19:44 ` Eric DeVolder
2023-07-06 15:58 ` Alexander Gordeev
2023-07-06 16:07 ` Eric DeVolder
2023-07-05 14:20 ` [PATCH v4 13/13] sh/kexec: " Eric DeVolder
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