linux-kernel - Re: [PATCH] [2/11] x86: Fix alternatives and kprobes to remap write-protected kernel text

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Message-Id: <200707231701.28529.ak@suse.de>
Date:	Mon, 23 Jul 2007 17:01:28 +0200
From:	Andi Kleen <ak@...e.de>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	jbeulich@...ell.com, jeremy@...p.org, zach@...are.com,
	patches@...-64.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [2/11] x86: Fix alternatives and kprobes to remap write-protected kernel text

On Monday 23 July 2007 16:46:03 Mathieu Desnoyers wrote:

> I would recommend to prefix with __init every function that is assumed
> "safe" because executed at boot time. It would minimize the risks of
> buggy usage of these text-modification primitives. That includes
> text_poke() and a big chunk of the apply alternative code. (it should
> never be executed on a live system, except at boot time, right ?)

lock prefix patching can happen later on cpu hotplug/unplug event.

-Andi

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