linux-kernel - Re: [PATCH] make /dev/kmem a config option

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Message-Id: <20080211143804.76f9743f.akpm@linux-foundation.org>
Date:	Mon, 11 Feb 2008 14:38:04 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	jengelh@...putergmbh.de, linux-kernel@...r.kernel.org,
	mingo@...e.hu, davej@...hat.com
Subject: Re: [PATCH] make /dev/kmem a config option

On Sun, 10 Feb 2008 17:05:09 -0800
Arjan van de Ven <arjan@...radead.org> wrote:

> Subject: [PATCH] make /dev/kmem a config option
> From: Arjan van de Ven <arjan@...ux.intel.com>
> 
> This patch makes /dev/kmem a config option; /dev/kmem is VERY rarely
> used, and when used, it's generally for no good (rootkits tend to be
> the most common users). With this config option, users have the
> choice to disable /dev/kmem, saving some size as well.
> 
> A patch to disable /dev/kmem has been in the Fedora and RHEL kernels for
> 4+ years now without any known problems or legit users of /dev/kmem.
> 

I question the testedness of this.

> +config DEV_KMEM
> ...
> +#ifdef CONFIG_DEVKMEM
>

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