Re: [Qemu-devel] vm state save/restore question

[Benjamin Herrenschmidt]

On Tue, 2012-06-19 at 23:48 +0200, Alexander Graf wrote:
> > We could keep track manually maybe using some kind of dirty bitmap of
> > changes to the hash table but that would add overhead to things like
> > H_ENTER.
> 
> Only during migration, right?

True. It will be an "interesting" user/kernel API tho ... I'll give it more 
thoughts.

I need to understand better how do that vs. qemu save/restore though. IE. That 
means
we can't just save the hash as a bulk and reload it, but we'd have to save bits 
of
it at a time or something like that no ? Or do we save it once, then save the 
diff
at the end ?

Cheers,
Ben.