From: Takashi Ikebe <ikebe.takashi@lab.ntt.co.jp>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: Daniel Jacobowitz <dan@debian.org>, Chris Wedgwood <cw@f00f.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH x86_64] Live Patching Function on 2.6.11.7
Date: Mon, 18 Apr 2005 14:41:44 +0900 [thread overview]
Message-ID: <42634898.5050702@lab.ntt.co.jp> (raw)
In-Reply-To: <Pine.LNX.4.58.0504172159120.28447@bigblue.dev.mdolabs.com>
Davide Libenzi wrote:
>On Mon, 2005-04-18 at 00:42 -0400, Daniel Jacobowitz wrote:
>
>
>
>>On Mon, Apr 18, 2005 at 01:19:57PM +0900, Takashi Ikebe wrote:
>>
>>
>>>GDB based approach seems not fit to our requirements. GDB(ptrace) based
>>>functions are basically need to be done when target process is stopping.
>>>In addition to that current PTRACE_PEEK/POKE* allows us to copy only a
>>>*word* size...
>>>
>>>
>>While true, this is easily fixable.
>>
>>
>
>Indeed, look at the systr_pmem_read() and systr_pmem_write() functions:
>
>http://www.xmailserver.org/sysctr.html
>
>
>
systr_pmem_read() and systr_pmem_write() just calls ptrace PTRACE_PEEKTEXT/DATA repeatedly....
In this case we need to *stop* target process whenever patch modules is loading....
It cause target process availability worse.
--
Takashi Ikebe
NTT Network Service Systems Laboratories
9-11, Midori-Cho 3-Chome Musashino-Shi,
Tokyo 180-8585 Japan
Tel : +81 422 59 4246, Fax : +81 422 60 4012
e-mail : ikebe.takashi@lab.ntt.co.jp
next prev parent reply other threads:[~2005-04-18 5:41 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-18 3:19 [PATCH x86_64] Live Patching Function on 2.6.11.7 Takashi Ikebe
2005-04-18 4:07 ` Chris Wedgwood
2005-04-18 4:19 ` Takashi Ikebe
2005-04-18 4:42 ` Daniel Jacobowitz
2005-04-18 4:55 ` Nicholas Miell
2005-04-18 5:01 ` Davide Libenzi
2005-04-18 5:41 ` Takashi Ikebe [this message]
2005-07-11 7:18 ` [PATCH] eventpoll : Suppress a short lived lock from struct file Eric Dumazet
2005-07-11 8:34 ` Peter Zijlstra
2005-07-11 9:29 ` Eric Dumazet
2005-07-11 14:00 ` Davide Libenzi
2005-07-11 15:20 ` Eric Dumazet
2005-04-18 5:00 ` [PATCH x86_64] Live Patching Function on 2.6.11.7 David S. Miller
2005-04-18 6:12 ` Chris Wedgwood
2005-04-18 6:35 ` Chris Friesen
2005-04-18 6:48 ` Chris Wedgwood
2005-04-18 10:03 ` James Courtier-Dutton
2005-04-18 9:10 ` Chris Wedgwood
2005-04-18 7:32 ` Takashi Ikebe
2005-04-18 7:56 ` Chris Wedgwood
2005-04-18 8:37 ` Takashi Ikebe
2005-04-18 8:59 ` Chris Wedgwood
2005-04-18 9:16 ` Paul Jackson
2005-04-18 9:25 ` Chris Wedgwood
2005-04-18 11:30 ` Rik van Riel
2005-04-18 12:52 ` Takashi Ikebe
2005-04-18 14:06 ` Rik van Riel
2005-04-19 2:14 ` Takashi Ikebe
2005-04-19 4:27 ` Chris Wedgwood
2005-04-19 5:19 ` Takashi Ikebe
2005-04-19 5:52 ` Chris Wedgwood
2005-04-20 4:18 ` Takashi Ikebe
2005-04-20 5:43 ` Chris Wedgwood
2005-04-20 7:35 ` Takashi Ikebe
2005-04-20 7:50 ` Chris Wedgwood
2005-04-20 7:57 ` Takashi Ikebe
2005-04-20 8:26 ` Chris Wedgwood
2005-04-20 8:45 ` Takashi Ikebe
2005-04-20 8:51 ` Chris Wedgwood
2005-04-20 11:19 ` Rik van Riel
2005-04-20 15:06 ` Chris Friesen
2005-04-20 8:34 ` Miquel van Smoorenburg
2005-04-19 5:57 ` Takashi Ikebe
2005-04-18 14:28 ` Paul Jackson
2005-04-20 13:10 ` Ralf Baechle
2005-04-20 15:08 ` Chris Friesen
2005-04-23 16:17 ` Andi Kleen
2005-04-25 2:11 ` Takashi Ikebe
2005-04-25 2:48 ` Kyle Moffett
2005-04-25 10:39 ` Takashi Ikebe
2005-04-25 11:15 ` Kyle Moffett
2005-04-25 15:09 ` Pavel Machek
2005-04-25 15:54 ` Andi Kleen
2005-04-25 16:36 ` Valdis.Kletnieks
2005-04-26 1:34 ` Takashi Ikebe
2005-04-26 2:15 ` Kyle Moffett
2005-04-26 9:36 ` Pavel Machek
2005-04-26 13:05 ` Andi Kleen
[not found] <3Uv7B-5lv-7@gated-at.bofh.it>
[not found] ` <3UvKd-5RT-1@gated-at.bofh.it>
[not found] ` <3Uw3y-65a-1@gated-at.bofh.it>
[not found] ` <3UwmX-6gm-5@gated-at.bofh.it>
[not found] ` <3UwwG-6lY-7@gated-at.bofh.it>
[not found] ` <3UwGk-6Cv-9@gated-at.bofh.it>
[not found] ` <3Uxj2-6YL-1@gated-at.bofh.it>
2005-04-18 10:59 ` Bodo Eggert <harvested.in.lkml@posting.7eggert.dyndns.org>
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