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Date: Tue, 24 Jul 2012 13:44:05 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Andre Przywara <andre.przywara@amd.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>, Borislav Petkov <bp@amd64.org>,
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Subject: Re: [PATCH 2/2] cpu: intel, amd: mask cleared cpuid features
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> This approach does not need any kernel support (except for the 
> /proc/cpuinfo filtering). Does this address the issues you have?

You can do the /proc/cpuinfo filtering in user space too