Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753847AbYJARZi (ORCPT ); Wed, 1 Oct 2008 13:25:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753310AbYJARZ3 (ORCPT ); Wed, 1 Oct 2008 13:25:29 -0400 Received: from terminus.zytor.com ([198.137.202.10]:58499 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752089AbYJARZ2 (ORCPT ); Wed, 1 Oct 2008 13:25:28 -0400 Message-ID: <48E3B19D.6060905@zytor.com> Date: Wed, 01 Oct 2008 10:21:33 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: akataria@vmware.com CC: Jeremy Fitzhardinge , "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> In-Reply-To: <1222881242.9381.17.camel@alok-dev1> 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: 729 Lines: 19 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 -- 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/