From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [RFC] CPUID usage for interaction between Hypervisors and Linux.
Date: Wed, 01 Oct 2008 10:21:33 -0700
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References: <1222881242.9381.17.camel@alok-dev1>
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Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
	"avi@redhat.com" <avi@redhat.com>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Gerd Hoffmann <kraxel@redhat.com>, Ingo Molnar <mingo@elte.hu>,
	the arch/x86 maintainers <x86@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	"Nakajima, Jun" <jun.nakajima@intel.com>,
	Dan Hecht <dhecht@vmware.com>,
	Zachary Amsden <zach@vmware.com>,
	virtualization@lists.linux-foundation.org, kvm@vger.kernel.org
To: akataria@vmware.com
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Alok Kataria wrote:
> 
> (This proposal may be adopted by other guest OSes.  However, that is not
> a requirement because a hypervisor can expose a different CPUID
> interface depending on the guest OS type that is specified by the VM
> configuration.)
> 

Excuse me, but that is blatantly idiotic.  Expecting the user having to 
configure a VM to match the target OS is *exactly* as stupid as 
expecting the user to reconfigure the BIOS.  It's totally the wrong 
thing to do.

	-hpa