From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60967) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XP3D6-0004cK-U6 for qemu-devel@nongnu.org; Wed, 03 Sep 2014 01:34:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XP3D5-0002rW-P2 for qemu-devel@nongnu.org; Wed, 03 Sep 2014 01:34:24 -0400 Date: Wed, 3 Sep 2014 09:37:29 +0300 From: "Michael S. Tsirkin" Message-ID: <20140903063729.GA4876@redhat.com> References: <1409160982-16389-1-git-send-email-mdroth@linux.vnet.ibm.com> <20140902152050.32021.68140@loki> <20140902152546.GA23254@redhat.com> <20140902152736.GA23266@redhat.com> <20140902210315.GA25153@redhat.com> <20140902215125.GC25231@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] [Qemu-stable] Patch Round-up for stable 2.1.1, freeze on 2014-09-03 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Andrey Korolyov Cc: ehabkost@redhat.com, "qemu-devel@nongnu.org" , Stefan Hajnoczi , knut.omang@oracle.com, qemu-stable@nongnu.org, Michael Roth , Michael Tokarev , Gerd Hoffmann , "J. Kiszka" , chen.fan.fnst@cn.fujitsu.com, Paolo Bonzini , sebastian.tanase@openwide.fr, zhang.zhanghailiang@huawei.com On Wed, Sep 03, 2014 at 02:17:02AM +0400, Andrey Korolyov wrote: > On Wed, Sep 3, 2014 at 2:09 AM, Andrey Korolyov wrote: > > On Wed, Sep 3, 2014 at 1:51 AM, Michael S. Tsirkin wrote: > >> On Wed, Sep 03, 2014 at 01:29:29AM +0400, Andrey Korolyov wrote: > >>> On Wed, Sep 3, 2014 at 1:03 AM, Michael S. Tsirkin wrote: > >>> >> bad one is the > >>> >> > >>> >> Author: Jason Wang > >>> >> Date: Tue Sep 2 18:07:46 2014 +0300 > >>> >> > >>> >> vhost_net: start/stop guest notifiers properly > >>> > > >>> > > >>> > > >>> > upstream has this (pull request sent today): > >>> > vhost_net: cleanup start/stop condition > >>> > > >>> > Could you apply it and see if it helps please? > >>> > > >>> > Michael, if it helps it should be before start/stop guest notifiers > >>> > ideally to avoid bisect problems. > >>> > >>> It is already applied as shown from the list in the previous message > >>> (there are some aio fixes too on top of 2.1 I picked before but they > >>> should not impact vhost-net interaction in any mean). The symptoms are > >>> a bit interesting - VM crashes only at PCI device initalization (e.g. > >>> grub stage after reset and initrd unpacking are passing well, but then > >>> things getting ugly). I am running 3.14 guest i686-pae kernel from > >>> debian backports in guest, so it may be version-specific after all. If > >>> it`ll be hard to reproduce, I can try 64bit, expecting same behavior. > >>> Please find args in attached file. > >> > >> > >> > >> ok just to make sure - which tree do I clone exactly? > >> > > > > https://github.com/mdroth/qemu.git stable-2.1-staging showing same > > behavior for me with those patches > > Forgot to mention important detail - I am playing with -mq now, so > actually virtio-net working in a bit different way than it may > expected (it also shown in args list from above, but someone may miss > it): > ... > qemu-system-x86_64: unable to start vhost net: 95: falling back on > userspace virtio > qemu-system-x86_64: unable to start vhost net: 95: falling back on > userspace virtio > ... Also - does it work fine if you disable mq?