Re: [Qemu-devel] [RFC PATCH v2 11/15] cpu-model/s390: Add QMP command query-cpu-model

Michael Mueller
2015-02-18T08:40:24Z

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On Tue, 17 Feb 2015 11:03:11 -0700
Eric Blake <eblake@redhat.com> wrote:

> On 02/17/2015 07:24 AM, Michael Mueller wrote:
> > This patch implements a new QMP request named 'query-cpu-model'.
> > It returns the cpu model of cpu 0 and its backing accelerator.
> >
> > request:
> > {"execute" : "query-cpu-model" }
> >
> > answer:
> > {"return" : {"name": "2827-ga2", "accelerator": "kvm" }}
> >
> > Alias names are resolved to their respective machine type and GA names
> > already during cpu instantiation. Thus, also a cpu model like 'host'
> > which is implemented as alias will return its normalized cpu model name.
> >
> > Furthermore the patch implements the following functions:
> >
> > - s390_cpu_typename(), returns the currently selected cpu type name or NULL
> > - s390_cpu_models_used(), returns true if S390 cpu models are in use
> >
> > Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
> > ---
> >
> > +##
> > +# @CpuModelInfo:
> > +#
> > +# Virtual CPU model definition.
> > +#
> > +# @name: the name of the CPU model definition
> > +#
> > +# Since: 2.3.0
> > +##
> > +{ 'type': 'CpuModelInfo',
> > + 'data': { 'name': 'str', '*accelerator': 'AccelId' } }
>
> You didn't document '*accelerator', including mention that it is
> optional (why would it not be output always?).

Right, as it is a new command and all cpus once implementing it have an associated accelerator
there is no point in making it optional. Will add a comment as well.
>
> > +
> > +##
> > +# @query-cpu-model:
> > +#
> > +# Return to current virtual CPU model
>
> s/to/the/

yep

>
> > +#
> > +# Returns: CpuModelInfo
> > +#
> > +# Since: 2.3.0
>
> We aren't very consistent on '2.3' vs. '2.3.0', so I won't complain
> about that.

But you seem to prefer major and minor only, so I will skip the trailing 0.

>
> > +##
> > +{ 'command': 'query-cpu-model', 'returns': 'CpuModelInfo' }
>
> Seems reasonable from the interface point of view; I have not closely
> reviewed the implementation.
>

Thanks
Michael
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