Re: [Adeos-main] Re: RTOS over Adeos document

[Jacob Gorm Hansen <jg@domain.hid>]

On Mon, Nov 04, 2002 at 12:05:44PM -0500, Karim Yaghmour wrote:
> 
> Jacob Gorm Hansen wrote:
> > just wanted to point you all to our project about running multiple
> > linuxes on the same machine, as well as migrating them quickly between
> > machines: http://www.nomadbios.dk
> 
> Quite interesting. It would be even more interesting to see the source.

Yes, we are working on a public CVS repo, should be up in a few minutes.
Check back soon for access details.

> The only thing that dampens my enthusiasm for this is the dependency on
> L4. I don't mean to debate its merits, but you're really dragging some
> else's limitations. Would you be interested to interface with the Adeos
> project for future work?

We had a number of reasons for choosing L4:

- It has recursive address spaces, which we need.
- It has fast IPC.
- It has a working Linux implementation.
- It has OSKit driver and TCP/IP support.

Having to deal with multiple tasks for each Linux was extremely complex
though, and might be a good reason for choosing a nano-kernel next time.

If Adeos gets spaces like Space, then it would be interesting.
Otherwise I don't think it is possible, because we need to protect guest
OSes against eachother. 

> Also, I suppose the migration capability requires that both systems have
> the exact same hardware and the exact same data on disk (or maybe this
> is why you discuss NFS boot on the project's site)?

Exactly ;-)
Currently only networking is abstracted, but this means that it may run
on any hardware, as long as it is supported by oskit.

> Karim

best,
jacob