On Tue, 27 Aug 2019 at 08:43, Wanpeng Li <kernel...@gmail.com> wrote: > > Cc Michael S. Tsirkin, > On Tue, 27 Aug 2019 at 04:42, Marcelo Tosatti <mtosa...@redhat.com> wrote: > > > > On Tue, Aug 13, 2019 at 08:55:29AM +0800, Wanpeng Li wrote: > > > On Sun, 4 Aug 2019 at 04:21, Marcelo Tosatti <mtosa...@redhat.com> wrote: > > > > > > > > On Thu, Aug 01, 2019 at 06:54:49PM +0200, Paolo Bonzini wrote: > > > > > On 01/08/19 18:51, Rafael J. Wysocki wrote: > > > > > > On 8/1/2019 9:06 AM, Wanpeng Li wrote: > > > > > >> From: Wanpeng Li <wanpen...@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. > > > > > >> > > > > > >> Cc: Rafael J. Wysocki <rafael.j.wyso...@intel.com> > > > > > >> Cc: Paolo Bonzini <pbonz...@redhat.com> > > > > > >> Cc: Radim Krčmář <rkrc...@redhat.com> > > > > > >> Cc: Marcelo Tosatti <mtosa...@redhat.com> > > > > > >> Signed-off-by: Wanpeng Li <wanpen...@tencent.com> > > > > > > > > > > > > Paolo, Marcelo, any comments? > > > > > > > > > > Yes, it's a good idea. > > > > > > > > > > Acked-by: Paolo Bonzini <pbonz...@redhat.com>
Hi Marcelo, If you don't have more concern, I guess Rafael can apply this patch now since the merge window is not too far. Regards, Wanpeng Li
