On 06/07/2016 07:37, Wanpeng Li wrote: > 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? I agree (and nested APIC timer is emulated by L1). Because the L1 APIC timer is set in the preemption timer before vmentry, this should not be necessary. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
