Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754197AbYJASMk (ORCPT ); Wed, 1 Oct 2008 14:12:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753467AbYJASMb (ORCPT ); Wed, 1 Oct 2008 14:12:31 -0400 Received: from gw.goop.org ([64.81.55.164]:46495 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753264AbYJASMa (ORCPT ); Wed, 1 Oct 2008 14:12:30 -0400 Message-ID: <48E3BD83.2090801@goop.org> Date: Wed, 01 Oct 2008 11:12:19 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.16 (X11/20080919) MIME-Version: 1.0 To: "H. Peter Anvin" CC: akataria@vmware.com, "avi@redhat.com" , Rusty Russell , Gerd Hoffmann , Ingo Molnar , the arch/x86 maintainers , LKML , "Nakajima, Jun" , Dan Hecht , Zachary Amsden , virtualization@lists.linux-foundation.org, kvm@vger.kernel.org Subject: Re: [RFC] CPUID usage for interaction between Hypervisors and Linux. References: <1222881242.9381.17.camel@alok-dev1> <48E3BBC1.2050607@goop.org> <48E3BC47.60900@zytor.com> In-Reply-To: <48E3BC47.60900@zytor.com> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 985 Lines: 24 H. Peter Anvin wrote: > 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*. Yes, that would be good. In that case I'd revise my proposal to back each leaf block 256 leaves instead of 16. But it still needs to be a proper enumeration with signatures, rather than assigning fixed points in that space to specific interfaces. J -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/