From: David Newall <davidn@davidnewall.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Jeff Arnold <jbarnold@ksplice.com>,
linux-kernel@vger.kernel.org, tabbott@ksplice.com,
wdaher@ksplice.com, andersk@ksplice.com, nelhage@ksplice.com,
price@ksplice.com, geofft@ksplice.com
Subject: Re: Ksplice updates for Ubuntu 9.04 Jaunty
Date: Tue, 07 Jul 2009 02:58:24 +0930 [thread overview]
Message-ID: <4A523438.6030506@davidnewall.com> (raw)
In-Reply-To: <20090705184710.GB17910@elf.ucw.cz>
Pavel Machek wrote:
> I did not say "unimportant patches". I said simple patches.
>
> Lets say something adds field to task_struct. Can you handle that?
>
By co-incidence, a similar discussion took place on another mailing list
last week, and the answer was that yes, Ksplice can handle it. From my
reading of the Ksplice paper (http://www.ksplice.com/paper), I think a
shadow structure is created to hold the new field. Code that accesses
the new field, which ipso facto is part of the patch, is modified to use
the shadow structure; the rest of the kernel remains unaltered.
next prev parent reply other threads:[~2009-07-06 17:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-25 9:51 Ksplice updates for Ubuntu 9.04 Jaunty Jeff Arnold
2009-06-30 6:31 ` Pavel Machek
2009-07-02 19:06 ` Jeff Arnold
2009-07-02 21:38 ` Pavel Machek
2009-07-05 18:28 ` Jeff Arnold
2009-07-05 18:47 ` Pavel Machek
2009-07-06 17:28 ` David Newall [this message]
2009-07-07 16:46 ` Nelson Elhage
2009-07-02 23:51 ` KOSAKI Motohiro
2009-07-05 18:31 ` Jeff Arnold
2009-07-06 9:28 ` KOSAKI Motohiro
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