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SubjectRe: what's the incompatibility between hibernation and hotplug?memory
On Thu 2008-03-27 21:55:01, Rafael J. Wysocki wrote:
> On Thursday, 27 of March 2008, Jeremy Fitzhardinge wrote:
> > Pavel Machek wrote:
> > > Hi!
> > >
> > >
> > >>> I noticed that Kconfig warns that hibernation and hotplug memory are not
> > >>> compatible. What's the issue?
> > >>>
> > >> Generally, we might not be able to handle memory unplugged at a wrong time
> > >> (eg. after we've created the image).
> > >>
> > >> Which part of Kconfig says that exactly?
> > >>
> > >
> > > Actually I believe it is simpler than that. We were not prepared to
> > > deal with memory holes in hibernation code, so we just disabled it in
> > > Kconfig...
> >
> > Doesn't that mean its generally incompatible with non-flatmem memory
> > arrangements rather than hotplug memory specifically?
>
> No, it should work with NUMA nowadays, actually.
>
> Perhaps it's worth trying it with hotplug memory and see what problems arise?

Good. I believe it is good chance it will work with hotplug, too... as
long as memory is not inserted/removed during suspend/resume.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
pomozte zachranit klanovicky les: http://www.ujezdskystrom.info/


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