Subject: Re: [RFC PATCH v7 01/19] Add a new structure for skb buffer from external.

From: "Michael S. Tsirkin" <[email-masked]>
Date: Sun, 20 Jun 2010 13:39:09 +0300

On Sun, Jun 20, 2010 at 08:32:35PM +1000, Herbert Xu wrote:
> On Sun, Jun 20, 2010 at 01:06:32PM +0300, Michael S. Tsirkin wrote:
> >
> > Changing the guest virtio to match the backend is a problem,
> > this breaks migration etc.
> 
> As long as it's done in a backwards compatible way it should be
> fine.

Possibly, but to me the need to do this implies that
we'll need another change with different hardware at the backend.

> It's just like migrating from a backend that supports TSO
> to one that doesn't.
> 
> Cheers,

Exactly. We don't support such migration.

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