Re: [Qemu-devel] [PATCH v3 07/33] automatically add vmstate for reset support in devices

[Juan Quintela]

Damien Hedde <address@hidden> wrote:
> On 8/9/19 12:32 PM, Peter Maydell wrote:
>> On Fri, 9 Aug 2019 at 11:29, Damien Hedde <address@hidden> wrote:
>>>
>>> One way to keep the feature without copy-pasting vmsd would be to add
>>> a new vmstate_register with an additional argument to pass the base
>>> class vmsd section and handle the whole thing there.
>> 
>> If we have a vmstate section which contains no actual data,
>> only subsections with 'needed' functions, is it migration
>> compatible with previous versions in the same way that
>> tacking a subsection onto an existing function is?
>
> I don't think so because of the naming schema. I had to forge the
> correct name for the reset subsection for every device.
> Each subsection must be named after its parent section plus '/something'.

That bit is easy.  You jsut named it: "parent_name/subsection_name", no?

Later, Juan.