s390x: Fixes for 2.12

- Fix for the s390 cpumodel
 - Forbid multifunction PCI devices
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20180323' into staging

s390x: Fixes for 2.12

- Fix for the s390 cpumodel
- Forbid multifunction PCI devices

# gpg: Signature made Fri 23 Mar 2018 09:06:31 GMT
# gpg:                using RSA key 117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
# Primary key fingerprint: F922 9381 A334 08F9 DBAB  FBCA 117B BC80 B5A6 1C7C

* remotes/borntraeger/tags/s390x-20180323:
  s390x/cpumodel: fix feature groups and breakage of MSA8
  s390x/pci: forbid multifunction pci device

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/s390x/s390-pci-bus.c

@@ -816,6 +816,11 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev,
         PCIBridge *pb = PCI_BRIDGE(dev);
         PCIDevice *pdev = PCI_DEVICE(dev);
 
+        if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
+            error_setg(errp, "multifunction not supported in s390");
+            return;
+        }
+
         pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
         pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
 
@@ -835,6 +840,11 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev,
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
         pdev = PCI_DEVICE(dev);
 
+        if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
+            error_setg(errp, "multifunction not supported in s390");
+            return;
+        }
+
         if (!dev->id) {
             /* In the case the PCI device does not define an id */
             /* we generate one based on the PCI address         */

target/s390x/cpu_features.h

@@ -78,6 +78,7 @@ typedef enum {
     S390_FEAT_GROUP_MSA_EXT_6,
     S390_FEAT_GROUP_MSA_EXT_7,
     S390_FEAT_GROUP_MSA_EXT_8,
+    S390_FEAT_GROUP_MULTIPLE_EPOCH_PTFF,
     S390_FEAT_GROUP_MAX,
 } S390FeatGroup;