KVM: split kvm_vcpu_wake_up from kvm_vcpu_kick

AVIC has a use for kvm_vcpu_wake_up.
Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>
Tested-by: NSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

include/linux/kvm_host.h

@@ -657,6 +657,7 @@ void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn);
 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
 void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu);
 void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu);
+void kvm_vcpu_wake_up(struct kvm_vcpu *vcpu);
 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
 int kvm_vcpu_yield_to(struct kvm_vcpu *target);
 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);

virt/kvm/kvm_main.c

@@ -2076,13 +2076,8 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
 EXPORT_SYMBOL_GPL(kvm_vcpu_block);
 
 #ifndef CONFIG_S390
-/*
- * Kick a sleeping VCPU, or a guest VCPU in guest mode, into host kernel mode.
- */
-void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
+void kvm_vcpu_wake_up(struct kvm_vcpu *vcpu)
 {
-	int me;
-	int cpu = vcpu->cpu;
 	struct swait_queue_head *wqp;
 
 	wqp = kvm_arch_vcpu_wq(vcpu);
@@ -2091,6 +2086,18 @@ void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
 		++vcpu->stat.halt_wakeup;
 	}
 
+}
+EXPORT_SYMBOL_GPL(kvm_vcpu_wake_up);
+
+/*
+ * Kick a sleeping VCPU, or a guest VCPU in guest mode, into host kernel mode.
+ */
+void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
+{
+	int me;
+	int cpu = vcpu->cpu;
+
+	kvm_vcpu_wake_up(vcpu);
 	me = get_cpu();
 	if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
 		if (kvm_arch_vcpu_should_kick(vcpu))