linux-kernel - Re: [PATCH 0/5] kexec: fix the incorrect ifdeffery and dependency of CONFIG

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Date:   Fri, 8 Dec 2023 15:42:39 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-next@...r.kernel.org, loongarch@...ts.linux.dev,
        kexec@...ts.infradead.org, linux-m68k@...ts.linux-m68k.org,
        linux-mips@...r.kernel.org, linux-sh@...r.kernel.org,
        x86@...nel.org, akpm@...ux-foundation.org, eric_devolder@...oo.com,
        sfr@...b.auug.org.au, ignat@...udflare.com
Subject: Re: [PATCH 0/5] kexec: fix the incorrect ifdeffery and dependency of
 CONFIG_KEXEC

Forgot adding kexec to CC, add it now.

On 12/08/23 at 03:30pm, Baoquan He wrote:
> The select of KEXEC for CRASH_DUMP in kernel/Kconfig.kexec will be
> dropped, then compiling errors will be triggered if below config
> items are set:
> 
> ===
> CONFIG_CRASH_CORE=y
> CONFIG_KEXEC_CORE=y
> CONFIG_CRASH_DUMP=y
> ===
> 
> E.g on mips, below link error are seen:
> --------------------------------------------------------------------
> mipsel-linux-ld: kernel/kexec_core.o: in function `kimage_free':
> kernel/kexec_core.c:(.text+0x2200): undefined reference to `machine_kexec_cleanup'
> mipsel-linux-ld: kernel/kexec_core.o: in function `__crash_kexec':
> kernel/kexec_core.c:(.text+0x2480): undefined reference to `machine_crash_shutdown'
> mipsel-linux-ld: kernel/kexec_core.c:(.text+0x2488): undefined reference to `machine_kexec'
> mipsel-linux-ld: kernel/kexec_core.o: in function `kernel_kexec':
> kernel/kexec_core.c:(.text+0x29b8): undefined reference to `machine_shutdown'
> mipsel-linux-ld: kernel/kexec_core.c:(.text+0x29c0): undefined reference to `machine_kexec'
> --------------------------------------------------------------------
> 
> Here, change the incorrect dependency of building kexec_core related object
> files, and the ifdeffery on architectures from CONFIG_KEXEC to
> CONFIG_KEXEC_CORE.
> 
> Testing:
> ========
> Passed on mips and loognarch with the LKP reproducer.
> 
> Baoquan He (5):
>   loongarch, kexec: change dependency of object files
>   m68k, kexec: fix the incorrect ifdeffery and build dependency of
>     CONFIG_KEXEC
>   mips, kexec: fix the incorrect ifdeffery and dependency of
>     CONFIG_KEXEC
>   sh, kexec: fix the incorrect ifdeffery and dependency of CONFIG_KEXEC
>   x86, kexec: fix the wrong ifdeffery CONFIG_KEXEC
> 
>  arch/loongarch/kernel/Makefile  |  2 +-
>  arch/m68k/include/asm/kexec.h   |  4 ++--
>  arch/m68k/kernel/Makefile       |  2 +-
>  arch/mips/cavium-octeon/smp.c   |  4 ++--
>  arch/mips/include/asm/kexec.h   |  2 +-
>  arch/mips/include/asm/smp-ops.h |  2 +-
>  arch/mips/include/asm/smp.h     |  2 +-
>  arch/mips/kernel/Makefile       |  2 +-
>  arch/mips/kernel/smp-bmips.c    |  4 ++--
>  arch/mips/kernel/smp-cps.c      | 10 +++++-----
>  arch/mips/loongson64/reset.c    |  4 ++--
>  arch/mips/loongson64/smp.c      |  2 +-
>  arch/sh/include/asm/kexec.h     |  4 ++--
>  arch/sh/kernel/Makefile         |  2 +-
>  arch/sh/kernel/reboot.c         |  4 ++--
>  arch/sh/kernel/setup.c          |  2 +-
>  arch/x86/boot/compressed/acpi.c |  2 +-
>  17 files changed, 27 insertions(+), 27 deletions(-)
> 
> -- 
> 2.41.0
>