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

Anthony Liguori
2008-11-04T14:51:03Z

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