Messages in this thread | | | From | Wanpeng Li <> | Date | Thu, 5 Sep 2019 08:15:44 +0800 | Subject | Re: [PATCH v2] cpuidle-haltpoll: Enable kvm guest polling when dedicated physical CPUs are available |
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On Wed, 4 Sep 2019 at 17:48, Rafael J. Wysocki <rafael.j.wysocki@intel.com> wrote: > > On 8/29/2019 10:49 AM, Wanpeng Li wrote: > > From: Wanpeng Li <wanpengli@tencent.com> > > > > The downside of guest side polling is that polling is performed even > > with other runnable tasks in the host. However, even if poll in kvm > > can aware whether or not other runnable tasks in the same pCPU, it > > can still incur extra overhead in over-subscribe scenario. Now we can > > just enable guest polling when dedicated pCPUs are available. > > > > Acked-by: Paolo Bonzini <pbonzini@redhat.com> > > Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > Cc: Paolo Bonzini <pbonzini@redhat.com> > > Cc: Radim Krčmář <rkrcmar@redhat.com> > > Signed-off-by: Wanpeng Li <wanpengli@tencent.com> > > As stated before, I'm going to queue up this change for 5.4, with the > Paolo's ACK. > > BTW, in the future please CC power management changes to > linux-pm@vger.kernel.org for easier handling.
Ok, thanks.
Wanpeng
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