Re: [PATCH] KVM: VMX: switch to hrtimer for TSC deadline timer when L2 guest is running

[Wanpeng Li]

Cc Jan,
2016-07-06 13:10 GMT+08:00 Haozhong Zhang <haozhong.zhang@xxxxxxxxx>:
> A different VMCS is loaded when L2 guest is running, so it's incorrect
> to use the VMX preemption timer for L1 TSC deadline timer. This patch
> switches to hrtimer for L1 TSC deadline timer when entering L2 guest,
> and switches back to VMX preemption timer when nested VMEXIT from L2 to
> L1.

Nested preemption timer is emulated by hrtimer, so it doesn't
influence vmcs02, why this is needed?

Regards,
Wanpeng Li