From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: 2.6.30-rc1 A few issues and a stall Date: Tue, 14 Apr 2009 13:03:58 +0300 Message-ID: <49E45F8E.9080803@redhat.com> References: <200904121124.07193.edt@aei.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: LKML , netdev@vger.kernel.org, linux-acpi@vger.kernel.org To: Ed Tomlinson Return-path: Received: from mx2.redhat.com ([66.187.237.31]:34005 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756365AbZDNKDi (ORCPT ); Tue, 14 Apr 2009 06:03:38 -0400 In-Reply-To: <200904121124.07193.edt@aei.ca> Sender: netdev-owner@vger.kernel.org List-ID: Ed Tomlinson wrote: > Once the above networking stuff is setup I start kvm with the command below > > QEMU_AUDIO_DRV=alsa kvm -m 1024 -cdrom /mnt/sdc4/divx/archlinux-2009.02-ftp-i686.iso -boot c -smp 3 -usb -usbdevice tablet -vga std -drive file=arch.img -net nic,macaddr=52:54:00:12:34:23 -net tap,ifname=qtap0,script=no -soundhw all -mem-path /hugepages > > which works and the kvm session boots just fine. > > Issue 2. When I attempt to ping outside the kvm session the pc (not just the kvm session) hangs. > Its impossible to kill the kvm session and there are numerious info messages from RCU (tree RCU enabled) > about stalls. > The rcu messages are likely because a processor has died. Do things work if you drop -mem-path? -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.