Re: [PATCH v3 2/4] KVM: LAPIC: lapic timer interrupt is injected by posted interrupt

On Wed, Jun 12, 2019 at 05:22:31PM +0200, Radim Krčmář wrote: > 2019-06-12 09:48+0800, Wanpeng Li: > > On Wed, 12 Jun 2019 at 04:39, Marcelo Tosatti wrote: > > > On Tue, Jun 11, 2019 at 08:17:07PM +0800, Wanpeng Li wrote: > > > > From: Wanpeng Li > > > > diff --git a/arch/x86/kvm/lapic.c b/arch/x

Re: [PATCH v3 2/4] KVM: LAPIC: lapic timer interrupt is injected by posted interrupt

2019-06-12 09:48+0800, Wanpeng Li: > On Wed, 12 Jun 2019 at 04:39, Marcelo Tosatti wrote: > > On Tue, Jun 11, 2019 at 08:17:07PM +0800, Wanpeng Li wrote: > > > From: Wanpeng Li > > > diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c > > > @@ -133,6 +133,12 @@ inline bool > > > posted_inte

Re: [PATCH v3 2/4] KVM: LAPIC: lapic timer interrupt is injected by posted interrupt

On Wed, 12 Jun 2019 at 04:39, Marcelo Tosatti wrote: > > On Tue, Jun 11, 2019 at 08:17:07PM +0800, Wanpeng Li wrote: > > From: Wanpeng Li > > > > Dedicated instances are currently disturbed by unnecessary jitter due > > to the emulated lapic timers fire on the same pCPUs which vCPUs resident. > >

Re: [PATCH v3 2/4] KVM: LAPIC: lapic timer interrupt is injected by posted interrupt

On Tue, Jun 11, 2019 at 08:17:07PM +0800, Wanpeng Li wrote: > From: Wanpeng Li > > Dedicated instances are currently disturbed by unnecessary jitter due > to the emulated lapic timers fire on the same pCPUs which vCPUs resident. > There is no hardware virtual timer on Intel for guest like ARM. B

[PATCH v3 2/4] KVM: LAPIC: lapic timer interrupt is injected by posted interrupt

From: Wanpeng Li Dedicated instances are currently disturbed by unnecessary jitter due to the emulated lapic timers fire on the same pCPUs which vCPUs resident. There is no hardware virtual timer on Intel for guest like ARM. Both programming timer in guest and the emulated timer fires incur vme