Messages in this thread | | | Date | Mon, 18 Apr 2005 14:41:44 +0900 | From | Takashi Ikebe <> | Subject | Re: [PATCH x86_64] Live Patching Function on 2.6.11.7 |
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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
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