[libvirt] [PATCH 0/3] qemu: support -overcommit cpu-pm=on|off

[Daniel P. Berrangé]

On Mon, Aug 19, 2019 at 10:32:23AM +0200, Menno Lageman wrote:
> QEMU introduced a CPU power management feature with commit 6f131f13e68d
> ("kvm: support -overcommit cpu-pm=on|off").
> 
> With this flag, kvm allows guest to control host CPU power state.  This
> increases latency for other processes using same host CPU in an
> unpredictable way, but if decreases idle entry/exit times for the
> running VCPU, so to use it QEMU needs a hint about whether host CPU is
> overcommitted, hence the flag name.
> 
> This patch series adds a new kvm feature 'cpu-pm' for controlling
> "-overcommit cpu-pm=[on|off]"
> 
>     <features>
>       <kvm>
>         <cpu-pm state='on'/>
>       </kvm>
>     </features>

Unless I'm missing it, there was never a followup v2 for this
series ?  Did you ever do more work on this, as this is still
a useful feature to support for KVM to maximize performance
AFAIK.


Regards,
Daniel
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