s390x: add zPCI feature to "qemu" CPU model

As we now always have PCI support, let's add it to the "qemu" CPU model,
taking care of backwards compatibility.
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20190212112323.15904-1-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

hw/s390x/s390-virtio-ccw.c

@@ -657,7 +657,10 @@ DEFINE_CCW_MACHINE(4_0, "4.0", true);
 
 static void ccw_machine_3_1_instance_options(MachineState *machine)
 {
+    static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V3_1 };
     ccw_machine_4_0_instance_options(machine);
+
+    s390_set_qemu_cpu_model(0x2827, 12, 2, qemu_cpu_feat);
 }
 
 static void ccw_machine_3_1_class_options(MachineClass *mc)

target/s390x/gen-features.c

@@ -560,7 +560,7 @@ static uint16_t qemu_V2_11[] = {
     S390_FEAT_ZARCH,
 };
 
-static uint16_t qemu_LATEST[] = {
+static uint16_t qemu_V3_1[] = {
     S390_FEAT_DAT_ENH,
     S390_FEAT_IDTE_SEGMENT,
     S390_FEAT_STFLE,
@@ -592,13 +592,16 @@ static uint16_t qemu_LATEST[] = {
     S390_FEAT_MSA_EXT_4,
 };
 
+static uint16_t qemu_LATEST[] = {
+    S390_FEAT_ZPCI,
+};
+
 /* add all new definitions before this point */
 static uint16_t qemu_MAX[] = {
     /* z13+ features */
     S390_FEAT_STFLE_53,
     /* generates a dependency warning, leave it out for now */
     S390_FEAT_MSA_EXT_5,
-    S390_FEAT_ZPCI,
 };
 
 /****** END FEATURE DEFS ******/
@@ -708,6 +711,7 @@ static FeatGroupDefSpec FeatGroupDef[] = {
  *******************************/
 static FeatGroupDefSpec QemuFeatDef[] = {
     QEMU_FEAT_INITIALIZER(V2_11),
+    QEMU_FEAT_INITIALIZER(V3_1),
     QEMU_FEAT_INITIALIZER(LATEST),
     QEMU_FEAT_INITIALIZER(MAX),
 };