KVM: PPC: Move guest enter/exit down into subarch-specific code

Instead of doing the kvm_guest_enter/exit() and local_irq_dis/enable()
calls in powerpc.c, this moves them down into the subarch-specific
book3s_pr.c and booke.c.  This eliminates an extra local_irq_enable()
call in book3s_pr.c, and will be needed for when we do SMT4 guest
support in the book3s hypervisor mode code.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 9066325..ee45fa0 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -312,6 +312,19 @@
 		vcpu->arch.shared->int_pending = 0;
 }
 
+int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+{
+	int ret;
+
+	local_irq_disable();
+	kvm_guest_enter();
+	ret = __kvmppc_vcpu_run(kvm_run, vcpu);
+	kvm_guest_exit();
+	local_irq_enable();
+
+	return ret;
+}
+
 /**
  * kvmppc_handle_exit
  *