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Date: Wed, 7 Aug 2013 10:17:20 +0200
From: Stefan Hajnoczi <stefanha@redhat.com>
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Subject: Re: [Qemu-devel] [SeaBIOS] [PATCH] don't expose pvpanic device in
	the UI
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To: Andreas =?iso-8859-1?Q?F=E4rber?= <afaerber@suse.de>
Cc: Kevin Wolf <kwolf@redhat.com>, Gleb Natapov <gleb@redhat.com>, Marcel Apfelbaum <marcel.a@redhat.com>, seabios@seabios.org, qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Anthony Liguori <anthony@codemonkey.ws>, Paolo Bonzini <pbonzini@redhat.com>

On Tue, Aug 06, 2013 at 02:45:48PM +0200, Andreas F=E4rber wrote:
> Am 06.08.2013 14:09, schrieb Michael S. Tsirkin:
> > On Tue, Aug 06, 2013 at 01:03:34PM +0200, Andreas F=E4rber wrote:
> >> FWIW -M q35 does not create all Q35 devices, there's -readconfig
> >> docs/q35-chipset.cfg for the rest. The criteria certainly is not
> >> migratability, since ICH9 AHCI (part of -M q35) is unmigratable,
> >> unfortunately.
> >=20
> > Wasn't this fixed recently?
>=20
> Not in qemu.git at least, that's why I couldn't test PCIe migration wit=
h
> q35 recently and resorted to picking random devices into i440fx.
>=20
> Jason had added a VMStateDescription with fields extending my initial
> work, but it is .unmigratable =3D 1 /* Still buggy under I/O load */.

I haven't read the whole discussion but the recent AHCI fix I'm aware of
is making FLUSH commands work correctly.  That wasn't specifically aimed
at fixing migration.

Stefan