From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gilles PIETRI Subject: KVM-86 not exposing 64 bits CPU anymore, NICE Date: Thu, 04 Jun 2009 09:20:38 +0200 Message-ID: <4A2775C6.9030503@gilouweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from smtp1-g21.free.fr ([212.27.42.1]:48428 "EHLO smtp1-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752804AbZFDHUq (ORCPT ); Thu, 4 Jun 2009 03:20:46 -0400 Received: from smtp1-g21.free.fr (localhost [127.0.0.1]) by smtp1-g21.free.fr (Postfix) with ESMTP id 0E3F9940133 for ; Thu, 4 Jun 2009 09:20:41 +0200 (CEST) Received: from [192.168.0.27] (xbn44-3-82-232-77-67.fbx.proxad.net [82.232.77.67]) by smtp1-g21.free.fr (Postfix) with ESMTP id 1B3B2940191 for ; Thu, 4 Jun 2009 09:20:39 +0200 (CEST) Sender: kvm-owner@vger.kernel.org List-ID: Hi, I'm quite pissed off. I just upgraded to kvm-86 on a host that has worked nicely on kvm-78 for quite some time. But since I was fearing the qcow2 corruption issues, I wanted to upgrade kvm-86. After testing the performance, I decided to switch. How stupid that was. That was really putting too much trust in KVM. Now I can't have 64 bits CPUs on my guests. My host is running a 2.6.27.7 kernel, and is x86_64 enabled. Until the upgrade, guests were running x86_64 fine. Now, it says long mode can't be used or something like that, and I can only have 32 bits guests. Looks really like the bug explained here: http://www.mail-archive.com/kvm@vger.kernel.org/msg09431.html If I use -no-kvm, it works, but obviously, I want to be able to have kvm support enabled. Now, I really am happy about this upgrade, and I'm gonna have to roll it back. I really would appreciate some help on this.. Gilles