Re: [Xen-devel] xen & MacVtap

[topperxin <topperxin@xxxxxxx>]

ï


Hi Wei

     Thanks for your reply, I know you are in charge of porting Virtio to xen, how about the process? May we configure Virtio on xen?

     So far as you said, the MacVtap was written specially for Virtio, other virtual NIC driver model can not use it, right?

      I get the information from http://virt.kernelnewbies.org/MacVTap

      "Macvtap is a new device driver meant to simplify virtualized bridged networking. It replaces the combination of the tun/tap and bridge drivers with a single module based on the macvlan device driver. A macvtap endpoint is a character device that largely follows the tun/tap ioctl interface and can be used directly by kvm/qemu and other hypervisors that support the tun/tap interface." 

       So far as I comprehend, any hypervisors can configure MacVtap so long as it can support tun/tap interface, right?  So May I say there is no so closely relationship between MacVtap and Virtio , right? 

         Looking forward to your reply. thanks.

At 2014-01-09 02:44:05,"Wei Liu" <wei.liu2@xxxxxxxxxx> wrote:
>On Wed, Jan 08, 2014 at 06:22:06PM +0800, topperxin wrote:
>> Hi list
>>         As we all know, SR-IOV technology can improve VNIC's
>>         performance, while it can not support live migration. I get
>>         some information recently that on KVM+Virtio platform, if we
>>         use MacVtap + SR-IOV, the live migration could be done
>>         successfully. What I want to know is may I configure MacVtap
>>         on Xen? 
>>        Any replies are welcome! Thanks a lot.
>
>AIUI MacVtap runs in emulation mode and connects to VirtIO to implement
>the feature you want. That would mean you also need to use VirtIO
>network driver for Xen's HVM domain, if you manage to configure MacVtap
>for Xen.
>
>Basically that means a configuration that nobody ever tried. Good luck.
>:-)
>
>Wei.
>
>
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>

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