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Re: [Qemu-devel] [PATCH v6 1/2] kvm: support -overcommit cpu-pm=on|off
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From: |
Eduardo Habkost |
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Subject: |
Re: [Qemu-devel] [PATCH v6 1/2] kvm: support -overcommit cpu-pm=on|off |
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Date: |
Wed, 27 Jun 2018 10:43:35 -0300 |
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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>
--
Eduardo
Re: [Qemu-devel] [PATCH v6 1/2] kvm: support -overcommit cpu-pm=on|off,
Eduardo Habkost <=
Re: [Qemu-devel] [PATCH v6 0/2] kvm: limited x86 CPU power management, no-reply, 2018/06/22
Re: [Qemu-devel] [PATCH v6 0/2] kvm: limited x86 CPU power management, no-reply, 2018/06/22
Re: [Qemu-devel] [PATCH v6 0/2] kvm: limited x86 CPU power management, no-reply, 2018/06/24
Re: [Qemu-devel] [PATCH v6 0/2] kvm: limited x86 CPU power management, Paolo Bonzini, 2018/06/27