[Qemu-devel] Re: optional feature

[Michael S. Tsirkin]

On Wed, Sep 16, 2009 at 02:13:06PM +0200, Juan Quintela wrote:
> VMState rules are simple:
> - Everything is explicit

By the way, pci currently has cmask,
which performs checking on load, making sure
that load does not modify a constant field in config space,
which can't change as a result of guest actions.
If it does - migration fails.

This is IMO much better and more robust than
simply hoping that there are no bugs or that
developers remember to increment a version
number each time they change some field.

I think it's pretty important to keep this
feature, and maybe add something similar
to other devices.

How will VMState support this?

-- 
MST