linux-kernel - Re: Use CPUID to communicate with the hypervisor.

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Date:	Fri, 26 Sep 2008 21:20:14 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	akataria@...are.com
CC:	Jeremy Fitzhardinge <jeremy@...p.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	the arch/x86 maintainers <x86@...nel.org>,
	"avi@...hat.com" <avi@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Zach Amsden <zach@...are.com>,
	Daniel Hecht <dhecht@...are.com>,
	"Jun.Nakajima@...el.Com" <Jun.Nakajima@...el.Com>,
	Tim Deegan <Tim.Deegan@...rix.com>
Subject: Re: Use CPUID to communicate with the hypervisor.

Alok Kataria wrote:
> 
> Avoiding existing leaves,
> Microsoft's Hypervisor  is using levels 0x40000000 - 0x40000005.
> The first 2 are standard levels and the rest of them are Microsoft
> hypervisors specific levels. So started with 0x40000010.
> 

The first two?  And standard according to whom?

	-hpa
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