Re: [PATCH RESEND v2] KVM: X86: Implement PV sched yield hypercall

2019-05-28 Thread kbuild test robot
Hi Wanpeng, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvm/linux-next] [also build test WARNING on v5.2-rc2 next-20190524] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-

Re: [PATCH RESEND v2] KVM: X86: Implement PV sched yield hypercall

2019-05-27 Thread Wanpeng Li
On Tue, 28 May 2019 at 14:08, kbuild test robot wrote: > > Hi Wanpeng, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on kvm/linux-next] > [also build test ERROR on v5.2-rc2 next-20190524] > [if your patch is applied to the wrong git tree, please drop us a note t

Re: [PATCH RESEND v2] KVM: X86: Implement PV sched yield hypercall

2019-05-27 Thread kbuild test robot
Hi Wanpeng, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on v5.2-rc2 next-20190524] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux

[PATCH RESEND v2] KVM: X86: Implement PV sched yield hypercall

2019-05-27 Thread Wanpeng Li
From: Wanpeng Li The target vCPUs are in runnable state after vcpu_kick and suitable as a yield target. This patch implements the sched yield hypercall. 17% performance increase of ebizzy benchmark can be observed in an over-subscribe environment. (w/ kvm-pv-tlb disabled, testing TLB flush ca