From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Andi Kleen" <andi@firstfloor.org>
Subject: Re: [RFC PATCH 3/3] KVM: MMU: Optimize guest page table walk
Date: Sun, 1 May 2011 22:51:24 +0200
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>> Ok it looks like the 32bit kernel only handles 1/2/4. Maybe that
>> was the problem if you ran on 32bit.
>
> I'm happy with a slower copy_from_user() for that particular case.

It wouldn't be hard to fix.

-Andi