Re: [Qemu-devel] [PATCH 0/3] Allow host_net_add monitor command accept file descriptors

[Avi Kivity]

On 07/07/2009 11:13 AM, Mark McLoughlin wrote:
> > > Nice idea, certainly.
> > >
> > > However, since it's only currently useful for tap/socket networking, I'm
> > > happier with not adding two new monitor commands and only supporting a
> > > single fd for now.
> > >
> > >        
> > What happens when we do get more commands?
> >      
>
> Any specific ideas around what else might use it?
>    

Migration, usb, passing around eventfds for interguest communication.

> > Do we then add the new commands and special-case fd=msgfd ?
> >      
>
> Sounds like a fine plan to me. We could name an fd passed via the
> current commands as "msgfd" and only the "getfd" command would have the
> ability to assign another name.
>    

If we can't see ahead, it's fine to accumulate cruft.  When we can 
however we should avoid it.  The external interfaces are complicated enough.

--
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