Re: [Qemu-devel] Headsup: windows virtio networking does not work on current git

[Michael Tokarev]

02.02.2013 00:36, Anthony Liguori wrote:
> Michael Tokarev <address@hidden> writes:
>
> > 02.02.2013 00:18, Michael Tokarev wrote:
> > > Just a heads-up for now, no real diagnostics or anything like that.
> > >
> > > Current git master (a9c87c586ba9ee290792a98dc126b2861b7f8b03), when booted
> > > a windows guest, results in no virtio-net inside.  Neither winXP nor Win7,
> > > neither older nor latest (22 Jan 2013) virtio-net drivers works.
> > >
> > > Windows displays a yellow exclamation mark near the virtio-net device and
> > > says it can't start the device (Code 10).
> > >
> > > Linux guests work fine, quick test anyway.
> > >
> > > Cc'ing Jason since his virtio-net changes was last.  But I repeat: no
> > > diagnostics as of yet, no bisection.
> >
> > Bisection was easy, since win works fine right before the multiqueue
> > virtio-net series.  This is the first bad commit:
>
> Adding Vadim and Michael.
>
> If you use -M pc-1.3 or explicitly disable multiqueue, does the driver work?

Neither one of these nor both makes any visible difference.
Neither does -M pc-1.1 (just in case).

> Regards,
>
> Anthony Liguori
>
> > commit fed699f9ca6ae8a0fb62803334cf46fa64d1eb91
> > Author: Jason Wang <address@hidden>
> > Date:   Wed Jan 30 19:12:39 2013 +0800
> >
> >       virtio-net: multiqueue support
> >
> >       This patch implements both userspace and vhost support for multiple queue
> >       virtio-net (VIRTIO_NET_F_MQ). This is done by introducing an array of
> >       VirtIONetQueue to VirtIONet.
> >
> >       Signed-off-by: Jason Wang <address@hidden>
> >       Signed-off-by: Anthony Liguori <address@hidden>
> >
> > After this commit, win guest (winXP and win7) shows yellow
> > exclamation sign and is unable to start the device with
> > code 10.
> >
> > FWIW.  I'm not sure it is a good idea to make a release with
> > such a breakage, even rc0.
> >
> > Thanks,
> >
> > /mjt