[Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts

[Juan Quintela]

"Michael S. Tsirkin" <address@hidden> wrote:

>> But to really make it work, we need to take a list of each savevm format
>> change and put it here.  Notice that several changes are needed:
>> - savevm infrastructure save functions don't know about version id
>> - devices don't know to "behave" as other version
>> - other things that I have probably missed
>> 
>> Later, Juan.
>
> Why do you think this the right place for it, I wonder?
> This describes the machine, it does not seem to have
> anything to do with how we migrate it.

Becase here is where we know that _this_ machine had _this_ versions of
each device.  And this is also the trivial part to describe: I want a
machine like the one in qemu-0.11.

What is more, it makes trivial for downstream to do things like:
- I define my machine, called foo-7.0, and the changes that it has over
  any other machine.

Later, Juan.