Re: [Qemu-devel] [PATCH v2] trace: [qmp] Add QAPI/QMP commands to query and control event tracing state

[Markus Armbruster]

Lluís Vilanova <address@hidden> writes:

> Markus Armbruster writes:
>
>> Lluís Vilanova <address@hidden> writes:
>>> Also removes old "trace-event", "trace-file" and "info trace-events" HMP
>>> commands.
>
>> We gain the ability to control trace via QMP, but lose the ability to
>> control it via HMP, correct?
>
> Right. I can keep the HMP commands, but doing so requires exposing the 
> internal
> trace event identifier number in the QMP interface. Also, "trace-file" cannot 
> be
> implemented on top of the current QMP commands, and is specific to the 
> "simple"
> tracing backend.

Would rough feature-parity with QMP be feasible with new HMP commands on
top of the QMP interfaces, completely ignoring HMP backward
compatibility?

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