Re: [PATCH v2 3/4] KVM: LAPIC: Expose per-vCPU timer adavance information to userspace

2019-05-15 Thread Wanpeng Li
On Thu, 16 May 2019 at 01:21, Sean Christopherson wrote: > > On Wed, May 15, 2019 at 12:11:53PM +0800, Wanpeng Li wrote: > > From: Wanpeng Li > > > > Expose the per-vCPU advancement information to the user via per-vCPU debugfs > > entry. wait_lapic_expire() call was moved above guest_enter_irqoff

Re: [PATCH v2 3/4] KVM: LAPIC: Expose per-vCPU timer adavance information to userspace

2019-05-15 Thread Sean Christopherson
On Wed, May 15, 2019 at 12:11:53PM +0800, Wanpeng Li wrote: > From: Wanpeng Li > > Expose the per-vCPU advancement information to the user via per-vCPU debugfs > entry. wait_lapic_expire() call was moved above guest_enter_irqoff() because > of its tracepoint, which violated the RCU extended qui

[PATCH v2 3/4] KVM: LAPIC: Expose per-vCPU timer adavance information to userspace

2019-05-14 Thread Wanpeng Li
From: Wanpeng Li Expose the per-vCPU advancement information to the user via per-vCPU debugfs entry. wait_lapic_expire() call was moved above guest_enter_irqoff() because of its tracepoint, which violated the RCU extended quiescent state invoked by guest_enter_irqoff()[1][2]. This patch simply