On Friday 11 December 2009 17:07:17 Dale wrote:
> Alan McKinnon wrote:
> > On Friday 11 December 2009 15:16:01 Dale wrote:
> >> Rebooting will also do all of this but it is not needed.  From a
> >> technical stand point, the only time you must reboot is to load a new
> >> kernel.
> >
> > And these days, not even then :-)
> >
> > [it requires some voodoo but is certainly possible]
> >
> > [[and I don't mean build and install a new kernel, I really do mean loa
> > ti into memory and run it, dispensing with the old one]]
> 
> I have read about that but never read something from someone who has
> actually done it.  I have always been curious as to how that would work,
> in reality not just theory.

kexec and CONFIG_RELOCATABLE

> I have also wondered why a person would go to all that trouble.
> Wouldn't all the services have to be restarted anyway?

Nope. userspace ABI is stable so services just carry on as normal once he new 
kernel comes up. You don't need to restart SeaMonkey if you restart a local 
apache on your machine - same thing


-- 
alan dot mckinnon at gmail dot com

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