void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
				 struct kvm_async_pf *work)
{
	struct kvm_lapic_irq irq = {
		.delivery_mode = APIC_DM_FIXED,
		.vector = vcpu->arch.apf.vec
	};

	if (work->wakeup_all)
		work->arch.token = ~0; /* broadcast wakeup */
	else
		kvm_del_async_pf_gfn(vcpu, work->arch.gfn);
	trace_kvm_async_pf_ready(work->arch.token, work->cr2_or_gpa);

	if ((work->wakeup_all || work->notpresent_injected) &&
	    kvm_pv_async_pf_enabled(vcpu) &&
	    !apf_put_user_ready(vcpu, work->arch.token)) {
		vcpu->arch.apf.pageready_pending = true;
		kvm_apic_set_irq(vcpu, &irq, NULL);
	}

	vcpu->arch.apf.halted = false;
	vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
}
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
				 struct kvm_async_pf *work)
{
	struct kvm_lapic_irq irq = {
		.delivery_mode = APIC_DM_FIXED,
		.vector = vcpu->arch.apf.vec
	};

	if (work->wakeup_all)
		work->arch.token = ~0;  
	else
		kvm_del_async_pf_gfn(vcpu, work->arch.gfn);
	trace_kvm_async_pf_ready(work->arch.token, work->cr2_or_gpa);

	if ((work->wakeup_all || work->notpresent_injected) &&
	    kvm_pv_async_pf_enabled(vcpu) &&
	    !apf_put_user_ready(vcpu, work->arch.token)) {
		vcpu->arch.apf.pageready_pending = true;
		kvm_apic_set_irq(vcpu, &irq, NULL);
	}

	vcpu->arch.apf.halted = false;
	vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
}