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Date: Sat, 22 Mar 2014 22:04:40 +0100
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Subject: Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>, Mike Day <ncmike@ncultra.org>, Gerd Hoffmann <kraxel@gmail.com>, QEMU Developers <qemu-devel@nongnu.org>

Am 22.03.2014 21:54, schrieb Peter Maydell:
> On 22 March 2014 20:18, Andreas F=C3=A4rber <afaerber@suse.de> wrote:
>> Because AFAIU
>> migration is possible without VMSD, just not with VMSD that sets
>> .unmigratable =3D 1.
>=20
> Well, the migration won't fail with an error, but on the destination
> end you'll end up with a device in its reset state but a guest which
> may think the device is in some other state. If the device was
> quiescent and doesn't need complex setup it might cope, but
> more likely is that that guest driver will fall over in a heap next
> time you try to use it...

Well, there is no OHCI state being added, only PCI state. So I'd be
curious to know what in there is the problem because a general review of
PCI devices might be due then - and ideally before we do the release.

Cheers,
Andreas

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