linux-kernel - Re: [RFC, PATCH 4/4] elf_core_dump(): Add extended numbering support

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Date:	Tue, 15 Dec 2009 16:34:01 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Daisuke HATAYAMA <d.hatayama@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	jdike@...toit.com, tony.luck@...el.com, mhiramat@...hat.com
Subject: Re: [RFC, PATCH 4/4] elf_core_dump(): Add extended numbering support

On Tue, Dec 15, 2009 at 3:56 PM, Américo Wang <xiyou.wangcong@...il.com> wrote:
> On Tue, Dec 15, 2009 at 10:41 AM, Daisuke HATAYAMA
> <d.hatayama@...fujitsu.com> wrote:
>> The current ELF dumper implementation can produce broken corefiles
>> if program headers exceed 65535. This number is determined by the
>> number of vmas which the process have. In particular, some extreme
>> programs may use more than 65535 vmas. (If you google max_map_count,
>> you can find some users facing this problem.) This kind of program
>> never be able to generate correct coredumps.
>>
>> This patch implements ``extended numbering'' that uses sh_info
>> field of the first section header instead of e_phnum field in order
>> to represent upto 4294967295 vmas.
>>
>> This is supported by AMD64-ABI(http://www.x86-64.org/documentation.html)
>> and Solaris(http://docs.sun.com/app/docs/doc/817-1984/). Of course,
>> we are preparing patches for gdb and binutils.
>>
>> Signed-off-by: Daisuke HATAYAMA <d.hatayama@...fujitsu.com>
>
>
> Hi,
>
> Can you reorder your patches please?
> Your patch 0/4 depends on 1/4, I am afraid. :-/
>

Oops!

Ignore this, I misread the subject. 4/4 depends on 1/4,
which is fine. :)
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