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Re: [Qemu-devel] [PATCH for-1.5] qmp: add query-drive-mirror-capabilitie


From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH for-1.5] qmp: add query-drive-mirror-capabilities
Date: Fri, 26 Apr 2013 15:40:25 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux)

Paolo Bonzini <address@hidden> writes:

> Il 25/04/2013 14:26, Luiz Capitulino ha scritto:
>> That's a good point, although I wonder if a command could have a new
>> capability that's not mapped to a new argument. IOW, I'd expect most/all
>> new capabilities to always be mapped to new arguments.
>
> A new enum value would also be a new capability, but it's handled better
> by enabling introspection of enum values.

An extension that adds neither arguments nor argument values is probably
an incompatible change, not a proper extension.  Don't do that then.



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