linux-kernel - Re: prctl(PR_SET

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Message-ID: <20130220083958.GS20312@moon>
Date:	Wed, 20 Feb 2013 12:39:58 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Amnon Shiloh <u3557@...o.sublimeip.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>, u3557@...lix.com.au,
	Oleg Nesterov <oleg@...hat.com>,
	Pedro Alves <palves@...hat.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Jan Kratochvil <jan.kratochvil@...hat.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: prctl(PR_SET_MM)

On Tue, Feb 19, 2013 at 05:25:31PM +1100, Amnon Shiloh wrote:
> 
> To reconstruct Linux process(es), one must be able to restore all their
> memory contents, states and registers to their original and consistent
> values.

I personally don't mind if this come become y by default, because it will
work for us. Still I guess if you need to reconstruct Linux process(es)
plain prctl extension is not enough, you still need a functionality which
is enclosed in config-checkpoint-restore (say /proc/pid/map_files, kcmp),
no?
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