From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753610AbYJAVR5 (ORCPT ); Wed, 1 Oct 2008 17:17:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754254AbYJAVRr (ORCPT ); Wed, 1 Oct 2008 17:17:47 -0400 Received: from sous-sol.org ([216.99.217.87]:51928 "EHLO sequoia.sous-sol.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753974AbYJAVRq (ORCPT ); Wed, 1 Oct 2008 17:17:46 -0400 Date: Wed, 1 Oct 2008 14:15:32 -0700 From: Chris Wright To: Anthony Liguori Cc: akataria@vmware.com, Jeremy Fitzhardinge , "avi@redhat.com" , Rusty Russell , Gerd Hoffmann , "H. Peter Anvin" , Ingo Molnar , the arch/x86 maintainers , LKML , "Nakajima, Jun" , Daniel Hecht , Zach Amsden , "virtualization@lists.linux-foundation.org" , "kvm@vger.kernel.org" Subject: Re: [RFC] CPUID usage for interaction between Hypervisors and Linux. Message-ID: <20081001211532.GC634@sequoia.sous-sol.org> References: <1222881242.9381.17.camel@alok-dev1> <48E3BBC1.2050607@goop.org> <1222894878.9381.63.camel@alok-dev1> <48E3E6DF.8060400@codemonkey.ws> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48E3E6DF.8060400@codemonkey.ws> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Anthony Liguori (anthony@codemonkey.ws) wrote: > We've already gone down the road of trying to make standard paravirtual > interfaces (via virtio). No one was sufficiently interested in > collaborating. I don't see why other paravirtualizations are going to > be much different. The point is to be able to support those interfaces. Presently a Linux guest will test and find out which HV it's running on, and adapt. Another guest will fail to enlighten itself, and perf will suffer...yadda, yadda. thanks, -chris