RE: [RFC PATCH v8 00/16] Provide a zero-copy method on KVMvirtio-net.

From: Shirley Ma
Date: Fri Jul 30 2010 - 11:52:10 EST


Hello Xiaohui,

On Fri, 2010-07-30 at 16:53 +0800, Xin, Xiaohui wrote:
> >Since vhost-net already supports macvtap/tun backends, do you think
> >whether it's better to implement zero copy in macvtap/tun than
> inducing
> >a new media passthrough device here?
> >
>
> I'm not sure if there will be more duplicated code in the kernel.

I think it should be less duplicated code in the kernel if we use
macvtap to support what media passthrough driver here. Since macvtap has
support virtio_net head and offloading already, the only missing func is
zero copy. Also QEMU supports macvtap, we just need add a zero copy flag
in option.

Thanks
Shirley

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