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Re: [libvirt] [Qemu-devel] [PATCH v2] hmp: allow cpu index for "info lapic"



On 07/19/2017 10:07 AM, Daniel P. Berrange wrote:
>> It doesn't.  Perhaps we should add that as a future libvirt-qemu.so API
>> addition, although it's probably easier to just use QMP than HMP when
>> using 'virsh qemu-monitor-command' if HMP doesn't do what you want.
> 
> Or special case the "cpu 1" command - ie notice that it is being
> requested and don't execute 'human-montor-command'. Instead just
> record the CPU index, and use that for future "human-monitor-command"
> invokations, so we get full compat with the (dubious) stateful HMP
> semantics that traditionally existed.

Is 'cpu' (and the followup commands affected by it) the only stateful
HMP command pairing?  Is there a way to specify multiple HMP commands in
a single human-monitor-command QMP call?

Indeed, tweaking qemu's human-monitor-command call to track the state
might be cleaner than having libvirt have to tweak API to work around
this wart of HMP.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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