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

[Fabio Fantoni]

Il 05/12/2013 16:21, Wei Liu ha scritto:
> On Thu, Dec 05, 2013 at 04:11:52PM +0100, Fabio Fantoni wrote:
> [...]
>> I saw a draft of virtio disk/net implementation for xen here:
>> http://wiki.xen.org/wiki/Virtio_On_Xen
>>
>> There are 2 kernel patch to support virtio on pv domUs:
>> http://downloads.xen.org/Wiki/VirtioOnXen/linux-01-virtio-xenbus.patch
>> http://downloads.xen.org/Wiki/VirtioOnXen/linux-02-virtio-ring.patch
>>
> Do not use these patches, they were experimental.
>
>> What about virtio on hvm linux? Maybe
>>  From wiki it seems virtio kernel patches only needed for pv domUs.
>> Could be these patches needed to have virtio fully working also for
>> hvm domUs?
>>
> Virtio for HVM guests should work out of the box. You probably need to
> prevent kernel from unplugging emulated devices.
>
> Wei.

Thanks for reply.

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.
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.

Thanks for any reply.