linux-kernel - Re: [RFC] CPUID usage for interaction between Hypervisors and Linux.

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Message-ID: <48E3BC47.60900@zytor.com>
Date:	Wed, 01 Oct 2008 11:07:03 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	akataria@...are.com, "avi@...hat.com" <avi@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Gerd Hoffmann <kraxel@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	the arch/x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Nakajima, Jun" <jun.nakajima@...el.com>,
	Dan Hecht <dhecht@...are.com>,
	Zachary Amsden <zach@...are.com>,
	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org
Subject: Re: [RFC] CPUID usage for interaction between Hypervisors and Linux.

Jeremy Fitzhardinge wrote:
> 
> No, we're not getting anywhere.  This is an outright broken idea.  The 
> space is too small to be able to chop up in this way, and the number of 
> vendors too large to be able to do it without having a central oversight.
> 

I suspect we can get a larger number space if we ask Intel & AMD.  In 
fact, I think we should request that the entire 0x40xxxxxx numberspace 
is assigned to virtualization *anyway*.

	-hpa
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