From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [Qemu-devel] QEMU with KVM does not start Win8 on kernel 3.4.67 and core2duo Date: Thu, 11 Sep 2014 15:32:09 +0200 Message-ID: <5411A459.70905@siemens.com> References: <1588278346.272810.1407323965730.open-xchange@oxbaltgw03.schlund.de> <560458840.59096.1410441935489.open-xchange@oxbaltgw07.schlund.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit To: Erik Rull , "kvm@vger.kernel.org" Return-path: Received: from david.siemens.de ([192.35.17.14]:51118 "EHLO david.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754588AbaIKNcN (ORCPT ); Thu, 11 Sep 2014 09:32:13 -0400 In-Reply-To: <560458840.59096.1410441935489.open-xchange@oxbaltgw07.schlund.de> Sender: kvm-owner@vger.kernel.org List-ID: On 2014-09-11 15:25, Erik Rull wrote: >> On August 6, 2014 at 1:19 PM Erik Rull wrote: >> >> >> Hi all, >> >> I did already several tests and I'm not completely sure what's going wrong, >> but >> here my scenario: >> >> When I start up QEMU w/ KVM 1.7.0 on a Core2Duo machine running a vanilla >> kernel >> 3.4.67 to run a Windows 8.0 guest, the guest freezes at boot without any >> error. >> When I dump the CPU registers via "info registers", nothing changes, that >> means >> the system really stalled. Same happens with QEMU 2.0.0. >> >> But - when I run the very same guest using Kernel 2.6.32.12 and QEMU 1.7.0 on >> the host side it works on the Core2Duo. Also the system above but just with an >> i3 or i5 CPU it works, too. >> >> I already disabled networking and USB for the guest and changed the graphics >> card - no effect. I assume that some mean bits and bytes have to be set up >> properly to get the thing running. >> >> Any hint what to change / test would be really appreciated. >> >> Thanks in advance, >> >> Best regards, >> >> Erik >> > > Hi all, > > I opened a qemu bug report on that and Jan helped me creating a kvm trace. I > attached it to the bug report. > https://bugs.launchpad.net/qemu/+bug/1366836 > > If you have further questions, please let me know. "File possibly truncated. Need at least 346583040, but file size is 133414912." Does "trace-cmd report" work for you? Is your file larger? Again, please also validate the behavior on latest next branch from kvm.git. Jan