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

Avi Kivity
2008-11-04T14:46:11Z

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.

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