From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sterling Windmill Subject: 32-bit windows 2k3 guest hangs with more than ~3.5GB memory Date: Mon, 9 Feb 2009 11:17:07 -0500 (EST) Message-ID: <975193155.161234196227173.JavaMail.root@mail.ampx.net> References: <1350970224.111234196066758.JavaMail.root@mail.ampx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail.ampx.net ([208.64.38.105]:47197 "EHLO mail.ampx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752689AbZBIQRJ (ORCPT ); Mon, 9 Feb 2009 11:17:09 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.ampx.net (Postfix) with ESMTP id 0A886834523 for ; Mon, 9 Feb 2009 11:17:08 -0500 (EST) Received: from mail.ampx.net ([127.0.0.1]) by localhost (mail.ampx.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9j8933vYEDjz for ; Mon, 9 Feb 2009 11:17:07 -0500 (EST) Received: from mail.ampx.net (mail.ampx.net [208.64.38.105]) by mail.ampx.net (Postfix) with ESMTP id 3A2D4834509 for ; Mon, 9 Feb 2009 11:17:07 -0500 (EST) In-Reply-To: <1350970224.111234196066758.JavaMail.root@mail.ampx.net> Sender: kvm-owner@vger.kernel.org List-ID: I am running a compiled kvm-83 and have tried both a 2.6.18 and 2.6.24 64-bit kernel on a system with an Intel Q6600 CPU and 8GB of ram. My 32-bit Windows 2003 guest works properly with 3.5GB of memory allocated to it and four virtual CPUs. Here is the command I am using to start the guest: /usr/local/kvm/bin/qemu-system-x86_64 -m 3584 -smp 4 -drive file=/kvm/termserver1.kvm,if=scsi,cache=writeback,boot=on \ -daemonize -vnc :1 \ -boot c \ -serial none \ -parallel none \ -net nic,model=virtio -net tap,script=/kvm/qemu-bridge-ifup The machine is using a raw disk image and a simple script to create a tap device and add it to an existing bridge. When I try to give the machine 4GB of memory or more, it hangs during the Windows boot process (when the Windows logo appears above a progress bar). There is very little cpu usage for the kvm process on the host at this point and no disk I/O. I have to manually quit the VM, adjust the memory back down to 3.5GB or slightly higher, and restart. Does KVM not currently support PAE for 32-bit guests? Thanks in advance, Sterling Windmill