From: "Randy.Dunlap" <rddunlap@osdl.org>
To: "Carlos Silva" <r3pek@r3pek.homelinux.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Hot kernel change
Date: Thu, 19 Feb 2004 13:08:08 -0800 [thread overview]
Message-ID: <20040219130808.0eab897e.rddunlap@osdl.org> (raw)
In-Reply-To: <12608.62.229.71.110.1077197623.squirrel@webmail.r3pek.homelinux.org>
On Thu, 19 Feb 2004 13:33:43 -0000 (WET) "Carlos Silva" <r3pek@r3pek.homelinux.org> wrote:
| hi,
|
| i would like to know if isn't it possible to implement a hot kernel
| change, i mean, without reboot. i would do it myself if i had the knoledge
| to do it but i'm starting with kernel-level programing now. i think it
| would be possible if we make something like M$'s OS do when it hibernates,
| copy all the memory, registers, etc to the disc and then put all back
| again.
|
| am i dreaming or this is possible? :)
The kexec patch is basically "linux reboots linux".
It bypasses the firmware/BIOS to do the reboot.
Patches for 2.6.0 and 2.6.1 are here (I haven't updated for
2.6.2 or 2.6.3 yet):
http://developer.osdl.org/rddunlap/kexec/
Patches for some 2.5.x kernels are here:
http://www.xmission.com/~ebiederm/files/kexec/
kexec does reduce reboot time quite a bit on some machines, but
there is still a noticeable pause.
--
~Randy
next prev parent reply other threads:[~2004-02-19 21:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-19 13:33 Carlos Silva
2004-02-19 14:05 ` Richard B. Johnson
2004-02-19 20:04 ` Jim Richardson
2004-02-19 20:25 ` Carlos Silva
2004-02-20 11:06 ` Jim Richardson
2004-02-20 13:03 ` Nigel Rantor
2004-02-19 21:08 ` Randy.Dunlap [this message]
2004-02-19 21:32 ` Carlos Silva
2004-02-20 7:17 ` Dominik Kubla
2004-04-02 16:16 Yann Dirson
2004-04-02 16:45 ` Steven Cole
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