On 06/06/19 07:31, Wanpeng Li wrote: > +static inline bool can_posted_interrupt_inject_timer(struct kvm_vcpu *vcpu) > +{ > + return posted_interrupt_inject_timer_enabled(vcpu) && > + !vcpu_halt_in_guest(vcpu); > +} > + I agree with Radim, what you want here is just use kvm_hlt_in_guest. I'll post shortly a prerequisite patch to block APF artificial halt when kvm_hlt_in_guest is true. Paolo