Re: [virtio-dev] Re: [RFC PATCH 3/3] virtio_net: make lower netdevs for virtio_bypass hidden

On Tue, Apr 3, 2018 at 5:20 AM, Michael S. Tsirkin <> wrote:
> On Sun, Apr 01, 2018 at 05:13:10AM -0400, Si-Wei Liu wrote:
>> diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
>> index aa40664..0827b7e 100644
>> --- a/include/uapi/linux/virtio_net.h
>> +++ b/include/uapi/linux/virtio_net.h
>> @@ -80,6 +80,8 @@ struct virtio_net_config {
>>       __u16 max_virtqueue_pairs;
>>       /* Default maximum transmit unit advice */
>>       __u16 mtu;
>> +     /* Device at bus:slot.function backed up by virtio_net */
>> +     __u16 bsf2backup;
>>  } __attribute__((packed));
>
> I'm not sure this is a good interface.  This isn't unique even on some
> PCI systems, not to speak of non-PCI ones.

Are you suggesting adding PCI address domain besides to make it
universally unique? And what the non-PCI device you envisioned that
the main target, essetially live migration, can/should cover? Or is
there better option in your mind already?

Thanks,
-Siwei
>
>>  /*
>> --
>> 1.8.3.1
>
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