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Re: [Qemu-devel] [PATCH v5 00/10] sPAPR CPU hotplug


From: Peter Krempa
Subject: Re: [Qemu-devel] [PATCH v5 00/10] sPAPR CPU hotplug
Date: Mon, 23 Nov 2015 12:54:33 +0100
User-agent: Mutt/1.5.24 (2015-08-30)

On Fri, Nov 20, 2015 at 18:24:29 +0530, Bharata B Rao wrote:
> This patchset adds CPU hotplug support for sPAPR PowerPC guests using
> device_add and device_del commands
> 
> (qemu) device_add POWER8-powerpc64-cpu,id=cpu0

Is there a reason why this uses 'device_add' rather than the 'cpu_add'
command? Libvirt uses two separate approaches already. Due to legacy
reasons we support the HMP 'cpu_set' command, and lately we added
support for QMP 'cpu-add'. Using device_add here will introduce a
different approach and will require yet another compatibility layer in
libvirt to support this.

Peter

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