linux-kernel - Re: [PATCH] modules fix incorrect percpu usage

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Date:	Tue, 30 Mar 2010 12:53:04 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	linux-kernel@...r.kernel.org,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Eric Dumazet <dada1@...mosbay.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	stable <stable@...nel.org>
Subject: Re: [PATCH] modules fix incorrect percpu usage

On Tue, 30 Mar 2010 09:52:08 -0400
Mathieu Desnoyers <mathieu.desnoyers@...icios.com> wrote:

> Should use per_cpu_ptr() to obfuscate the per cpu pointers (RELOC_HIDE is needed
> for per cpu pointers).
> 
> Introduced by commit:
> 
> module.c: commit 6b588c18f8dacfa6d7957c33c5ff832096e752d3
> 
> It applies to mainline as of 2.6.34-rc2. This patch should be queued for the
> stable branch, for kernels 2.6.29.x to 2.6.33.x.
> (based on 2.6.33.1, also applies to 2.6.34-rc2 -tip)

Why do you beleive this should be backported to -stable?  What are the
user-visible effects of this change?

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