Re: [Qemu-devel] [PATCH qemu] qom: Document qom/device-list-properties implementation specific

[Paolo Bonzini <pbonzini@redhat.com>]

On 02/05/2018 08:34, Markus Armbruster wrote:
> Alexey Kardashevskiy <aik@ozlabs.ru> writes:
> 
>> On 30/4/18 7:39 pm, Paolo Bonzini wrote:
>>> On 30/04/2018 08:52, Alexey Kardashevskiy wrote:
>>>> diff --git a/qapi/misc.json b/qapi/misc.json
>>>> index 5636f4a..399ec74 100644
>>>> --- a/qapi/misc.json
>>>> +++ b/qapi/misc.json
>>>> @@ -1491,6 +1491,10 @@
>>>>  #
>>>>  # List properties associated with a device.
>>>>  #
>>>> +# Note: the handler creates a device object, enumerates properties and destroys
>>>> +# the object so it only lists properties defined in DeviceClass::props or
>>>> +# created by DeviceClass::init()/TypeInfo::instance_init().
>>>> +#
>>>>  # @typename: the type name of a device
>>>>  #
>>>>  # Returns: a list of ObjectPropertyInfo describing a devices properties
>>>> @@ -1506,6 +1510,11 @@
>>>>  #
>>>>  # List properties associated with a QOM object.
>>>>  #
>>>> +# Note: the handler creates an object, enumerates properties and destroys
>>>> +# the object so it only lists properties created in TypeInfo::instance_init().
>>>> +# Since the instance_init() callback of the device object adds
>>>> +# DeviceClass::props as object properties, they will be listed as well.
>>>> +#
>>>
>>> This says what it does, but not why it is a problem.  Can you explain
>>> that to me as well?
>>
>> It probably is not unless someone adds properties in realize() callback,
> 
> Now work that into the doc comment, please :)

Are there any examples?  If not, that belongs in a comment in the code
rather than the QAPI doc comment.  If yes, then the doc comment should
include one.

Paolo