linux-kernel - Re: [PATCH] memory hotplug: Refuse to add unaligned memory regions

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Message-ID: <20110915063543.GA29211@suse.de>
Date:	Thu, 15 Sep 2011 08:35:43 +0200
From:	Greg KH <gregkh@...e.de>
To:	Anton Blanchard <anton@...ba.org>
Cc:	nfont@...tin.ibm.com, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memory hotplug: Refuse to add unaligned memory regions

On Thu, Sep 15, 2011 at 06:26:15AM +1000, Anton Blanchard wrote:
> 
> The sysfs memory probe interface allows unaligned regions
> to be added:
> 
> # echo 0xffffff > /sys/devices/system/memory/probe
> 
> # cat /proc/iomem 
> 00ffffff-01fffffe : System RAM
> 01ffffff-02fffffe : System RAM
> 02ffffff-03fffffe : System RAM
> 03ffffff-04fffffe : System RAM
> 04ffffff-05fffffe : System RAM
> 
> Return -EINVAL instead of creating these bad regions.
> 
> Signed-off-by: Anton Blanchard <anton@...ba.org>
> ---

Is this something that should go into 3.1 and older kernels to properly
handle this type of error?

greg k-h
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