Re: [9fans] From our "not quite grasping the concept" file

["Eric Van Hensbergen" <ericvh@gmail.com>]

On Nov 8, 2007 9:20 AM, erik quanstrom <quanstro@quanstro.net> wrote:
> > The opportunity still exists -- only one driver needs to implement
> > their numeric hack - 9p.  Then the rest can be based off of that.
> > Unfortunately, evolution just comes slow and painful.
> >
> >        -eric
>
> are 9p mesages really the right vehicle for this?  9p messages
> provides a serialized and in a standard byte order.  this requires
> byte reordering (on intel) and copying.  but are these really needed?
> the guest and host are on the same platform, so the guest can
> pass pointers to the host.  for the same reason, integers don't need
> reformatting.
>

9p is the right organizational structure.  The details of marshalling
and pass-by-copy versus pass-by-reference are transport issues.  Lucho
and I have been playing with zero-marhsalling/zero-copy transport
variants of 9P for virtualized environments.

          -eric