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Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor |
Date: |
Sat, 22 Mar 2014 21:23:33 +0000 |
On 22 March 2014 21:04, Andreas Färber <address@hidden> wrote:
> Am 22.03.2014 21:54, schrieb Peter Maydell:
>> On 22 March 2014 20:18, Andreas Färber <address@hidden> wrote:
>>> Because AFAIU
>>> migration is possible without VMSD, just not with VMSD that sets
>>> .unmigratable = 1.
>>
>> 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.
Oops, I hadn't noticed that; this patch is incorrect, then, because
vmstate_ohci needs to include a line for the OHCIState, and we
need a second vmstate struct for the OHCIState.
thanks
-- PMM
- [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Alexey Kardashevskiy, 2014/03/06
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Mike Day, 2014/03/06
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Alexey Kardashevskiy, 2014/03/14
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Andreas Färber, 2014/03/22
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Peter Maydell, 2014/03/22
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Andreas Färber, 2014/03/22
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor,
Peter Maydell <=
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Alexey Kardashevskiy, 2014/03/24
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Peter Maydell, 2014/03/24
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Gerd Hoffmann, 2014/03/24
- Re: [Qemu-devel] [PATCH] usb-ohci: add vmstate descriptor, Alexey Kardashevskiy, 2014/03/22