diff --git a/hw/qdev-monitor.c b/hw/qdev-monitor.c
index 17452c8c01..7915b4500d 100644
--- a/hw/qdev-monitor.c
+++ b/hw/qdev-monitor.c
@@ -20,6 +20,7 @@
 #include "qdev.h"
 #include "monitor.h"
 #include "qmp-commands.h"
+#include "arch_init.h"
 
 /*
  * Aliases were a bad idea from the start.  Let's keep them
@@ -29,16 +30,18 @@ typedef struct QDevAlias
 {
     const char *typename;
     const char *alias;
+    uint32_t arch_mask;
 } QDevAlias;
 
 static const QDevAlias qdev_alias_table[] = {
-    { "virtio-blk-pci", "virtio-blk" },
-    { "virtio-net-pci", "virtio-net" },
-    { "virtio-serial-pci", "virtio-serial" },
-    { "virtio-balloon-pci", "virtio-balloon" },
-    { "virtio-blk-s390", "virtio-blk" },
-    { "virtio-net-s390", "virtio-net" },
-    { "virtio-serial-s390", "virtio-serial" },
+    { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+    { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+    { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+    { "virtio-balloon-pci", "virtio-balloon",
+            QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+    { "virtio-blk-s390", "virtio-blk", QEMU_ARCH_S390X },
+    { "virtio-net-s390", "virtio-net", QEMU_ARCH_S390X },
+    { "virtio-serial-s390", "virtio-serial", QEMU_ARCH_S390X },
     { "lsi53c895a", "lsi" },
     { "ich9-ahci", "ahci" },
     { }
@@ -50,6 +53,11 @@ static const char *qdev_class_get_alias(DeviceClass *dc)
     int i;
 
     for (i = 0; qdev_alias_table[i].typename; i++) {
+        if (qdev_alias_table[i].arch_mask &&
+            !(qdev_alias_table[i].arch_mask & arch_type)) {
+            continue;
+        }
+
         if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
             return qdev_alias_table[i].alias;
         }
@@ -110,6 +118,11 @@ static const char *find_typename_by_alias(const char *alias)
     int i;
 
     for (i = 0; qdev_alias_table[i].alias; i++) {
+        if (qdev_alias_table[i].arch_mask &&
+            !(qdev_alias_table[i].arch_mask & arch_type)) {
+            continue;
+        }
+
         if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
             return qdev_alias_table[i].typename;
         }
diff --git a/linux-headers/asm-s390/kvm.h b/linux-headers/asm-s390/kvm.h
index 96076676e2..bdcbe0f8dd 100644
--- a/linux-headers/asm-s390/kvm.h
+++ b/linux-headers/asm-s390/kvm.h
@@ -52,4 +52,9 @@ struct kvm_sync_regs {
 	__u32 acrs[16];	/* access registers */
 	__u64 crs[16];	/* control registers */
 };
+
+#define KVM_REG_S390_TODPR	(KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
+#define KVM_REG_S390_EPOCHDIFF	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
+#define KVM_REG_S390_CPU_TIMER  (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
+#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
 #endif
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index c4426ec73d..5a9d4e350d 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -616,6 +616,7 @@ struct kvm_ppc_smmu_info {
 #define KVM_CAP_KVMCLOCK_CTRL 76
 #define KVM_CAP_SIGNAL_MSI 77
 #define KVM_CAP_PPC_GET_SMMU_INFO 78
+#define KVM_CAP_S390_COW 79
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index 56d2bd7f21..e8d68f05ca 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -141,15 +141,39 @@ svm_exit_reasons = {
     0x400: 'NPF',
 }
 
+s390_exit_reasons = {
+	0x000: 'UNKNOWN',
+	0x001: 'EXCEPTION',
+	0x002: 'IO',
+	0x003: 'HYPERCALL',
+	0x004: 'DEBUG',
+	0x005: 'HLT',
+	0x006: 'MMIO',
+	0x007: 'IRQ_WINDOW_OPEN',
+	0x008: 'SHUTDOWN',
+	0x009: 'FAIL_ENTRY',
+	0x010: 'INTR',
+	0x011: 'SET_TPR',
+	0x012: 'TPR_ACCESS',
+	0x013: 'S390_SIEIC',
+	0x014: 'S390_RESET',
+	0x015: 'DCR',
+	0x016: 'NMI',
+	0x017: 'INTERNAL_ERROR',
+	0x018: 'OSI',
+	0x019: 'PAPR_HCALL',
+}
+
 vendor_exit_reasons = {
     'vmx': vmx_exit_reasons,
     'svm': svm_exit_reasons,
+    'IBM/S390': s390_exit_reasons,
 }
 
 exit_reasons = None
 
 for line in file('/proc/cpuinfo').readlines():
-    if line.startswith('flags'):
+    if line.startswith('flags') or line.startswith('vendor_id'):
         for flag in line.split():
             if flag in vendor_exit_reasons:
                 exit_reasons = vendor_exit_reasons[flag]
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 5800fd612c..ec08dd0474 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -314,6 +314,7 @@ static int s390_cpu_initial_reset(CPUS390XState *env)
 {
     int i;
 
+    s390_del_running_cpu(env);
     if (kvm_vcpu_ioctl(env, KVM_S390_INITIAL_RESET, NULL) < 0) {
         perror("cannot init reset vcpu");
     }