From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:33542)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1anpMQ-0001A5-Ep
	for qemu-devel@nongnu.org; Wed, 06 Apr 2016 11:27:15 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <paolo.bonzini@gmail.com>) id 1anpMP-0005eD-JK
	for qemu-devel@nongnu.org; Wed, 06 Apr 2016 11:27:14 -0400
Sender: Paolo Bonzini <paolo.bonzini@gmail.com>
References: <SNT151-W2C8FCE7540EAE083116E5F39E0@phx.gbl>
	<20160406090802.GC16003@stefanha-x1.localdomain>
	<SNT151-W5517E92F6D22033257930AF39F0@phx.gbl>
From: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <57052AC8.5060609@redhat.com>
Date: Wed, 6 Apr 2016 17:27:04 +0200
MIME-Version: 1.0
In-Reply-To: <SNT151-W5517E92F6D22033257930AF39F0@phx.gbl>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] Possible bug: virtio-scsi + iothread (Former
 x-data-plane) = "Guest moved index from 0 to 61440" warning
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Zir Blazer <zir_blazer@hotmail.com>, Stefan Hajnoczi <stefanha@gmail.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "qemu-block@nongnu.org" <qemu-block@nongnu.org>



On 06/04/2016 16:59, Zir Blazer wrote:
>> On Tue, Apr 05, 2016 at 07:49:47PM -0300, Zir Blazer wrote:
>> > The bare minimum script that produces the warning, should be this:
>> > #!/bin/bash
>> > qemu-system-x86_64 \-m 1024M \-enable-kvm \-object
> iothread,id=iothread0 \-device virtio-scsi-pci,iothread=iothread0 \
>> > This produces the "Guest moved index from 0 to 61440" warning.
>> 
>> It does not produce a warning with qemu.git/master. I see the BIOS
>> screen.
>> 
>> Stefan
> 
> Sad that you didn't manage to reproduce it. Maybe its fixed on latest
> QEMU, but to test that I would have to learn how to compile and install
> it myself (Or wait for the Arch Linux User Repository qemu-git to catch
> up, otherwise I will have to wait for 2.6).
> 
> I would like if someone could confirm if it happens on QEMU 2.5, or I'm
> the only one affected due to some other misconfiguration issue (Which
> would be rather rare, since what I'm using is a pretty much a fresh
> install, an Arch Linux has a mostly vanilla QEMU).

I can confirm that it shows the message in Fedora's QEMU 2.5 but not
with upstream 2.6.

Thanks,

Paolo