On Tue, May 24, 2005 at 09:14:36PM +0900, YAMAMOTO Takashi wrote:
> > > is it (new userland + old kernel) expected to work?  i don't think so.
> > 
> > In this case it's not "new userland", it's a software from a newer pkgsrc
> > built on an older system.
> 
> sorry, i don't understand your point.
> xentools is an userland application.
> any userland applications which rely on something new in kernel are not
> expected to work with older kernel.
> whether it's in basesrc or not is not related.

It is, because pkgsrc softwares are expected to build and run on older
systems.

> 
> > The upgrade path for the /kern mmap issue is:
> > update pkgsrc and rebuild xentools20
> > update kernel
> > reboot
> > if something goes wrong with the new kenrel you can still go back to the
> > old one.
> 
> you can go back to the old xentools, can't you?

Once you have updated pkgsrc and installed the new tools, it's not as easy
as rebooting on an older kernel.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 26 ans d'experience feront toujours la difference
--