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Subject: Re: Use CPUID to communicate with the hypervisor.
From: Alok Kataria <akataria@vmware.com>
Reply-To: akataria@vmware.com
To: "H. Peter Anvin" <hpa@zytor.com>
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Date: Fri, 26 Sep 2008 22:37:14 -0700
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On Fri, 2008-09-26 at 21:20 -0700, H. Peter Anvin wrote:
> 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?
I was just quoting Microsoft's documentation that's available on MSDN.
http://msdn.microsoft.com/en-us/library/bb969724.aspx

Maybe by standard they mean standard definitions for them, the meaning
of the rest of the definitions change according to the value returned by
leaf 0x40000001 (Hypervisor vendor-neutral interface id). 

Thanks,
Alok
> 
>         -hpa