linux-kernel - Re: [PATCH 5/5] x86: Add debug of invalid per

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Message-Id: <200801181933.05662.ak@suse.de>
Date:	Fri, 18 Jan 2008 19:33:05 +0100
From:	Andi Kleen <ak@...e.de>
To:	travis@....com
Cc:	Andrew Morton <akpm@...ux-foundation.org>, mingo@...e.hu,
	Christoph Lameter <clameter@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] x86: Add debug of invalid per_cpu map accesses

On Friday 18 January 2008 19:30:16 travis@....com wrote:
> Provide a means to trap usages of per_cpu map variables before
> they are setup.  Define CONFIG_DEBUG_PER_CPU_MAPS to activate.

Are you sure that debug option is generally useful enough
to merge? It seems very specific to your patchkit, but I'm not
sure it would be worth carrying forever in the kernel.

Better would be probably to just unmap those areas anyways.

-Andi
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