Hello Maciej,
This patch set is targeting QEMU 10.0.What's not yet present is documentation update under docs/devel/migration but I didn't want to delay posting the code any longer. Such doc can still be merged later when the design is 100% finalized.
The changes are quite complex, the design is not trivial, the benefits are not huge as far as we know. I'd rather have the doc update first please. Thanks, C.