Re: [Qemu-devel] [RFC] postcopy livemigration proposal

[Isaku Yamahata]

On Mon, Aug 08, 2011 at 10:38:35AM +0100, Stefan Hajnoczi wrote:
> On Mon, Aug 8, 2011 at 4:24 AM, Isaku Yamahata <address@hidden> wrote:
> > This mail is on "Yabusame: Postcopy Live Migration for Qemu/KVM"
> > on which we'll give a talk at KVM-forum.
> 
> I'm curious if this approach is compatible with asynchronous page
> faults?  The idea there was to tell the guest about a page fault so it
> can continue to do useful work in the meantime (if the fault was in
> guest userspace).

Yes. It's quite possible to inject async page fault into the guest
when the faulted page isn't available on the destination. At the same
time the page will be requested to the source of the migration.
I think it's not so difficult.
-- 
yamahata