Re: [Qemu-devel] [RFC]VM live snapshot proposal

[Paolo Bonzini]

Il 03/03/2014 13:32, Stefan Hajnoczi ha scritto:
> If there is not enough memory to fork, then a synchronous approach to
> catching guest memory writes is needed.  I'm not sure if a good
> mechanism for that exists but the simplest would be mprotect(2) and a
> signal handler (which will make the guest run very slowly).

I think we'll be adding such a mechanism, but for guest memory reads, 
for postcopy migration.  Perhaps it could be reused for live snapshotting?

Paolo