Re: [PATCH v4 0/5] KVM: LAPIC: Optimize timer latency further

2019-05-22 Thread Wanpeng Li
On Mon, 20 May 2019 at 16:18, Wanpeng Li wrote: > > Advance lapic timer tries to hidden the hypervisor overhead between the > host emulated timer fires and the guest awares the timer is fired. However, > it just hidden the time between apic_timer_fn/handle_preemption_timer -> > wait_lapic_expire,

Re: [PATCH v4 0/5] KVM: LAPIC: Optimize timer latency further

2019-05-20 Thread Paolo Bonzini
On 20/05/19 10:18, Wanpeng Li wrote: > Advance lapic timer tries to hidden the hypervisor overhead between the > host emulated timer fires and the guest awares the timer is fired. However, > it just hidden the time between apic_timer_fn/handle_preemption_timer -> > wait_lapic_expire, instead of

[PATCH v4 0/5] KVM: LAPIC: Optimize timer latency further

2019-05-20 Thread Wanpeng Li
Advance lapic timer tries to hidden the hypervisor overhead between the host emulated timer fires and the guest awares the timer is fired. However, it just hidden the time between apic_timer_fn/handle_preemption_timer -> wait_lapic_expire, instead of the real position of vmentry which is mentio