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Date: Thu, 13 Dec 2012 09:57:00 +0100
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Subject: Re: [Qemu-devel] [RFC PATCH v7 7/8] virtio-pci-blk : Switch to new
	API.
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: aliguori@us.ibm.com, e.voevodin@samsung.com, mark.burton@greensocs.com, qemu-devel@nongnu.org, stefanha@redhat.com, cornelia.huck@de.ibm.com, afaerber@suse.de

On 11/12/2012 18:50, Peter Maydell wrote:
> On 10 December 2012 16:45,  <fred.konrad@greensocs.com> wrote:
>> From: KONRAD Frederic <fred.konrad@greensocs.com>
>>
>> Here the virtio-blk-pci is modified for the new API. The device virtio-pci-blk
>> extends virtio-pci. It creates and connects a virtio-blk during the init.
> Did you check whether this maintains backwards compatibility
> for vmstate migration information and device properties?
> (haven't investigated myself yet, just asking whether you have)
>
> -- PMM
What do you mean exactly by backwards compatibility for vmstate migration ?

The device properties didn't change.
The virtio-blk-pci creates a virtio-blk device, puts the virtio block 
properties and  inits the virtio-blk.