From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Lange Subject: Re: [RFC][PATCH] Add support for the GUEST_SMBASE VMCS field for Intel VT-x. Date: Tue, 5 Jun 2012 20:27:59 +0200 Message-ID: <20120605182759.GA23670@rhea> References: <4FB61795.9080601@sec.t-labs.tu-berlin.de> <4FB8E602.5030409@redhat.com> <20120605115904.GC17624@rhea> <4FCE050A.8070709@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: kvm@vger.kernel.org Return-path: Received: from mail.net.t-labs.tu-berlin.de ([130.149.220.252]:38610 "EHLO mail.net.t-labs.tu-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753421Ab2FES2M (ORCPT ); Tue, 5 Jun 2012 14:28:12 -0400 Received: from rhea (unknown [88.128.206.75]) by mail.net.t-labs.tu-berlin.de (Postfix) with ESMTPSA id 668314C0A09 for ; Tue, 5 Jun 2012 20:28:10 +0200 (CEST) Content-Disposition: inline In-Reply-To: <4FCE050A.8070709@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, Jun 05, 2012 at 04:09:30PM +0300, Avi Kivity wrote: > On 06/05/2012 02:59 PM, Matthias Lange wrote: > > Do you mean the ABI defined in the Intel Software Developer's manual 3B? Or is > > vmcs12 only an ABI internal to the kvm module? > > The latter. We want to be able to live migrate a guest with nested > guests, and if the format of vmcs12 changes, the migration will break. I'm trying to understand how the migration is implemented in kvm. Can you point me to some sort of documentation or pieces of code where I can start digging through the mechanism? Thanks, Matthias. -- Dipl.-Inf. Matthias Lange Security in Telecommunications TU Berlin / Telekom Innovation Laboratories Ernst-Reuter-Platz 7, 10587 Berlin Phone: +49 - 30 - 8353 58 553 Mobile: +49 - 160 - 587 28 07 Web: http://www.t-labs.tu-berlin.de/sect