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From: Peter Maydell <peter.maydell@linaro.org>
Date: Mon, 4 Apr 2016 17:37:23 +0100
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Subject: Re: [Qemu-devel] [PATCH] Migration: Add i82801b11 migration data
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To: Marcel Apfelbaum <marcel@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>, QEMU Developers <qemu-devel@nongnu.org>, Amit Shah <amit.shah@redhat.com>, John Snow <jsnow@redhat.com>

On 4 April 2016 at 17:14, Marcel Apfelbaum <marcel@redhat.com> wrote:
> On 04/04/2016 06:54 PM, Dr. David Alan Gilbert (git) wrote:
>>
>> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>>
>> The i82801b11 bridge didn't have a vmsd and thus didn't send
>> any migration data, including that of its parent PCIBridge object.
>> The symptom being if the guest used any devices behind the bridge
>> the guest crashed (mostly with various interrupt related issues).
>>
>> Note: This will cause migration from old qemus that used this device to
>> explicitly fail during migration as opposed to the guest crashing.

> If this patch was enough we got lucky :)
> Is not too late to make it to 2.6, right?

You should add a line to
http://wiki.qemu.org/Planning/2.6#Known_issues
for things you think should be fixed for 2.6...

thanks
-- PMM