On 10/25/21 14:05, Kashyap Chamarthy wrote:
On Mon, Oct 25, 2021 at 07:25:24AM +0200, Markus Armbruster wrote:
> By convention, names starting with "x-" are experimental. The parts
> of external interfaces so named may be withdrawn or changed
> incompatibly in future releases.
>
> Drawback: promoting something from experimental to stable involves a
> name change. Client code needs to be updated.
>
> Moreover, the convention is not universally observed:
>
> * QOM type "input-barrier" has properties "x-origin",
"y-origin".
> Looks accidental, but it's ABI since 4.2.
>
> * QOM types "memory-backend-file", "memory-backend-memfd",
> "memory-backend-ram", and "memory-backend-epc" have a property
> "x-use-canonical-path-for-ramblock-id" that is documented to be
> stable despite its name.
Looks like there's another stable property with an "x-" prefix:
"x-remote-object", part of QOM type @RemoteObjectProperties.
IIRC "x-remote-object" and RemoteObjectProperties are not stable.