linux-kernel - Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call filtering

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Message-ID: <20614.1306435422@turing-police.cc.vt.edu>
Date:	Thu, 26 May 2011 14:43:42 -0400
From:	Valdis.Kletnieks@...edu
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Avi Kivity <avi@...hat.com>, James Morris <jmorris@...ei.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Kees Cook <kees.cook@...onical.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Will Drewry <wad@...omium.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org, gnatapov@...hat.com,
	Chris Wright <chrisw@...s-sol.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call filtering

On Thu, 26 May 2011 20:36:35 +0200, Ingo Molnar said:

> I suspect we are really offtopic here, but an initial rsync, then 
> stopping the guest, final rsync + restart the guest at the target 
> would work with minimal interruption.

Actually, after you kick off the migrate, you really want to be tracking in
real time what pages get dirtied while you're doing the initial copy, so that
the second rsync doesn't have to walk through the file finding the differences.
 But that requires some extra instrumentation.


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