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Re: [Qemu-devel] [PATCH v6 1/2] kvm: support -overcommit cpu-pm=on|off

From: Eduardo Habkost
Subject: Re: [Qemu-devel] [PATCH v6 1/2] kvm: support -overcommit cpu-pm=on|off
Date: Wed, 27 Jun 2018 10:43:35 -0300
User-agent: Mutt/1.9.2 (2017-12-15)

On Fri, Jun 22, 2018 at 10:22:05PM +0300, Michael S. Tsirkin wrote:
> 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.
> Follow-up patches will expose this capability to guest
> (using mwait leaf).
> Based on a patch by Wanpeng Li <address@hidden> .
> Signed-off-by: Michael S. Tsirkin <address@hidden>

Reviewed-by: Eduardo Habkost <address@hidden>


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