Re: [PATCH 1/9] qapi: New special feature flag "unstable"

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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 of external interfaces so named may be withdrawn or changed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.




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