[Qemu-devel] Re: [PATCH 3/3] Add KVM support to QEMU

[Anthony Liguori]

Avi Kivity wrote:
> Anthony Liguori wrote:
>
> > > I think live migration is now broken, since kvm accesses will not 
> > > update the qemu dirty bitmap.
> >
> > Eh?  I don't follow you here.
>
> guest writes in qemu set the qemu dirty bitmap (for 
> cpu_physical_memory_get_dirty()), but guest accesses in kvm won't, 
> unless you enable dirty tracking and synchronize kvm's bitmap to 
> qemu's.  See the changes to migration.c in kvm's qemu.

Oh yes, that falls under the save/restore TODO item.

Regards,

Anthony Liguori