Re: [Qemu-arm] [Qemu-devel] [PATCH v5 2/5] arm: qmp: add query-gic-capabilities interface

[Eric Blake]

On 03/23/2016 08:06 AM, Markus Armbruster wrote:

>>> query-gic-capabilities looks like it fundamentally returns a list of
>>> capabilities.  Returning ['GICCapability'] is just fine then.
>>
>> I have posted v6 just as Eric has suggested. At least one advantage
>> is that it is easier to be extended (if needed) in the future, also
>> to follow the more-generic format to use dicts rather than
>> arrays. If you would not mind, I'll keep the dict interface there.
> 
> Returning such a list of a structured type is a well-established
> convention by now --- qmp-introspect.c shows 28 commands doing it, most
> of them named query-FOO.  I'd rather not start a different convention
> now, just because we got temporarily confused about our own rules.  So,
> unless there's something about query-gic-capabilities that makes it more
> likely to need extension outside its list element type, let's stick to
> returning the list.
> 
> Eric?

Makes sense to me, and perhaps my own fault for getting confused by not
even trying to delete just the whitelist line and seeing what would
happen.  Having a consistent style of query-* returning an array type is
reasonable to continue.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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