Re: [Xen-devel] [Spice-devel] Vdagent not working on xen linux hvm DomUs

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 06/12/2013 12:19, Wei Liu ha scritto:
> On Fri, Dec 06, 2013 at 12:15:30PM +0100, Fabio Fantoni wrote:
> > Il 06/12/2013 11:50, Wei Liu ha scritto:
> > > On Fri, Dec 06, 2013 at 11:15:17AM +0100, Fabio Fantoni wrote:
> > > [...]
> > > > > > I not mean virtio disk/net but virtio-serial channels used for
> > > > > > example by spice vdagent.
> > > > > > The libxl implentation xen side is correct and on windows domUs
> > > > > > vdagent is working (I'm using it since 2 year).
> > > > > > On linux domUs I found that virtio ports under /dev are missed/not
> > > > > > created and I not understand why.
> > > > > That's probably unplugged by Xen platform PCI device.
> > > > >
> > > > > > Recently I tried also with xen_platform_pci=0 and the Konrad's patch
> > > > > > (xen/pvhvm: If xen_platform_pci=0 is set don't blow up) but to no
> > > > > > avail.
> > > > > I haven't followed up that patch so I am not sure what's happening.
> > > > >
> > > > > Wei.
> > > > >
> > > > > > Thanks for any reply.
> > > > I did another tests, adding pci=nomsi to kernel boot option creates
> > > > virtio-serial ports correctly and vdagent works also on linux domUs,
> > > > I also tried to enable the xen platform and also in that case
> > > > vdagent works.
> > > > So the problem is only about msi.
> > > > Added xen-devel to cc.
> > > > Any ideas on how to fix permanently without adding pci=nomsi?
> > > As I remember it I wrote a patch for QEMU to make it capable of
> > > injecting MSI interrupt in Xen long time ago so it should work fine.
> > >
> > > Wei.
> > Is this?
> > http://git.qemu.org/?p=qemu.git;a=commit;h=f1dbf015dfb0aa7f66f710a1f1bc58b662951de2
> >
> > thenis there a xen and/or qemu regression?
> Yes that one.
>
> Not sure if it is a regression, because nobody ever tried to use
> virtio-serial in Xen AFAICT.
>
> If you find virtio-net / virtio-blk not working, then there's a problem.
>
> Wei.
Thanks for reply, where is the latest versions of your libxl patch for 
virtio-net / virtio-blk support?
I found only the old version of 2011 on wiki.
Is this the latest and I must updated it to be working on xen unstable 
before testing it?
Thanks for any reply.

> > > > Thanks for any reply.

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