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

[Fabio Fantoni]

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.