Message-ID: <45B014A4.8030801@zytor.com>
Date: Thu, 18 Jan 2007 16:45:24 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Andi Kleen <ak@suse.de>
CC: Alexey Dobriyan <adobriyan@openvz.org>, akpm@osdl.org,
       linux-kernel@vger.kernel.org, davej@codemonkey.org.uk,
       devel@vger.kernel.org
Subject: Re: [PATCH] rdmsr_on_cpu, wrmsr_on_cpu
References: <20070118144527.GA6021@localhost.sw.ru> <200701191021.16706.ak@suse.de> <45B00588.3010207@zytor.com> <200701191140.59612.ak@suse.de>
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Andi Kleen wrote:
> On Friday 19 January 2007 10:40, H. Peter Anvin wrote:
> 
>> It would, but rather than having the paravirtualization interfaces
>> duplicate out of control, we could/should implement the less generic
>> features in terms of the more generic, above the pvz layer.
> 
> I can't see any Hypervisors ever allowing those weird MSRs, so
> for paravirtualization it is probably better to just disable then.
> 

Don't assume they're going to be "weird."  Intel, in particular, is 
notorious in forgetting what they have already documented as architectural.

	-hpa
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