linux-kernel - Re: [PATCH] kbuild: make better section mismatch reports on i386 and mips

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Message-ID: <20070515204754.GD22966@uranus.ravnborg.org>
Date:	Tue, 15 May 2007 22:47:54 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
Cc:	linux-kernel@...r.kernel.org, ralf@...ux-mips.org
Subject: Re: [PATCH] kbuild: make better section mismatch reports on i386 and mips

On Tue, May 15, 2007 at 12:40:35AM +0900, Atsushi Nemoto wrote:
> On i386 and MIPS, warn_sec_mismatch() sometimes fails to show usefull
> symbol name.  This is because empty 'refsym' due to 0 r_addend value.
> This patch is to adjust r_addend value, consulting with
> apply_relocate() routine in kernel code.
> 
> Without this patch:
>   MODPOST vmlinux
> WARNING: init/built-in.o - Section mismatch: reference to .init.text: from .text between 'rest_init' (at offset 0xf4) and 'try_name'
> WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from .text between 'kmem_cache_create' (at offset 0x18a39) and 'cache_reap'
> WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from .text between 'kmem_cache_create' (at offset 0x18a6b) and 'cache_reap'
> 
> With this patch:
>   MODPOST vmlinux
> WARNING: mm/built-in.o - Section mismatch: reference to .init.text:set_up_list3s from .text between 'kmem_cache_create' (at offset 0x18a39) and 'cache_reap'
> WARNING: mm/built-in.o - Section mismatch: reference to .init.text:set_up_list3s from .text between 'kmem_cache_create' (at offset 0x18a6b) and 'cache_reap'
> 
> Now modpost can detect "kernel_init" name (and whitelist it) and show
> "set_up_list3s" name.

Applied.
It seems arm is impacted by the same.
Can you add arm support for the same?

	Sam

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