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Date: Tue, 04 Nov 2008 08:50:51 -0600
From: Anthony Liguori <aliguori@us.ibm.com>
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Subject: [Qemu-devel] Re: [PATCH 3/3] Add KVM support to QEMU
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To: Avi Kivity <avi@redhat.com>
Cc: Glauber Costa <glommer@redhat.com>, qemu-devel@nongnu.org, kvm-devel <kvm@vger.kernel.org>

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