s390x/tcg: unlock NMI

Nothing hindering us anymore from unlocking the restart code (used for
NMI).
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-29-david@redhat.com>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

hw/s390x/s390-virtio-ccw.c

@@ -398,9 +398,7 @@ static void s390_nmi(NMIState *n, int cpu_index, Error **errp)
 {
     CPUState *cs = qemu_get_cpu(cpu_index);
 
-    if (s390_cpu_restart(S390_CPU(cs))) {
-        error_setg(errp, QERR_UNSUPPORTED);
-    }
+    s390_cpu_restart(S390_CPU(cs));
 }
 
 static void ccw_machine_class_init(ObjectClass *oc, void *data)

target/s390x/sigp.c

@@ -480,11 +480,6 @@ int s390_cpu_restart(S390CPU *cpu)
 {
     SigpInfo si = {};
 
-    if (tcg_enabled()) {
-        /* FIXME TCG */
-        return -ENOSYS;
-    }
-
     run_on_cpu(CPU(cpu), sigp_restart, RUN_ON_CPU_HOST_PTR(&si));
     return 0;
 }