diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 8ea02174e3..a9b0b61b43 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -1,7 +1,7 @@
 /*
  * qemu_capabilities.c: QEMU capabilities generation
  *
- * Copyright (C) 2006-2014 Red Hat, Inc.
+ * Copyright (C) 2006-2015 Red Hat, Inc.
  * Copyright (C) 2006 Daniel P. Berrange
  *
  * This library is free software; you can redistribute it and/or
@@ -289,6 +289,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "vhost-user-multiqueue", /* 190 */
               "migration-event",
               "gpex-pcihost",
+              "ioh3420",
     );
 
 
@@ -1570,6 +1571,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
     { "pc-dimm", QEMU_CAPS_DEVICE_PC_DIMM },
     { "pci-serial", QEMU_CAPS_DEVICE_PCI_SERIAL },
     { "gpex-pcihost", QEMU_CAPS_OBJECT_GPEX},
+    { "ioh3420", QEMU_CAPS_DEVICE_IOH3420 },
 };
 
 static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBlk[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index a50c3cac87..892e9c33d4 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -1,7 +1,7 @@
 /*
  * qemu_capabilities.h: QEMU capabilities generation
  *
- * Copyright (C) 2006-2014 Red Hat, Inc.
+ * Copyright (C) 2006-2015 Red Hat, Inc.
  * Copyright (C) 2006 Daniel P. Berrange
  *
  * This library is free software; you can redistribute it and/or
@@ -232,6 +232,7 @@ typedef enum {
     QEMU_CAPS_VHOSTUSER_MULTIQUEUE = 190, /* vhost-user with -netdev queues= */
     QEMU_CAPS_MIGRATION_EVENT    = 191, /* MIGRATION event */
     QEMU_CAPS_OBJECT_GPEX        = 192, /* have generic PCI host controller */
+    QEMU_CAPS_DEVICE_IOH3420     = 193, /* -device ioh3420 */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 } virQEMUCapsFlags;
diff --git a/tests/qemucapabilitiesdata/caps_1.2.2-1.caps b/tests/qemucapabilitiesdata/caps_1.2.2-1.caps
index 30239df298..a1fafa61a7 100644
--- a/tests/qemucapabilitiesdata/caps_1.2.2-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.2.2-1.caps
@@ -120,4 +120,5 @@
     <flag name='vmware-svga.vgamem_mb'/>
     <flag name='qxl.vgamem_mb'/>
     <flag name='qxl-vga.vgamem_mb'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.3.1-1.caps b/tests/qemucapabilitiesdata/caps_1.3.1-1.caps
index ea3d850dd6..824ef02ad0 100644
--- a/tests/qemucapabilitiesdata/caps_1.3.1-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.3.1-1.caps
@@ -135,4 +135,5 @@
     <flag name='qxl.vgamem_mb'/>
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='pci-serial'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.4.2-1.caps b/tests/qemucapabilitiesdata/caps_1.4.2-1.caps
index 2c19ddc644..7ef5199686 100644
--- a/tests/qemucapabilitiesdata/caps_1.4.2-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.4.2-1.caps
@@ -136,4 +136,5 @@
     <flag name='qxl.vgamem_mb'/>
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='pci-serial'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.5.3-1.caps b/tests/qemucapabilitiesdata/caps_1.5.3-1.caps
index aadccd5e43..8c3d48e304 100644
--- a/tests/qemucapabilitiesdata/caps_1.5.3-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.5.3-1.caps
@@ -145,4 +145,5 @@
     <flag name='qxl.vgamem_mb'/>
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='pci-serial'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.6.0-1.caps b/tests/qemucapabilitiesdata/caps_1.6.0-1.caps
index 3e81cbfe06..72f7625fe1 100644
--- a/tests/qemucapabilitiesdata/caps_1.6.0-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.6.0-1.caps
@@ -151,4 +151,5 @@
     <flag name='qxl.vgamem_mb'/>
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='pci-serial'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.6.50-1.caps b/tests/qemucapabilitiesdata/caps_1.6.50-1.caps
index 84c357f735..d81c80cb25 100644
--- a/tests/qemucapabilitiesdata/caps_1.6.50-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.6.50-1.caps
@@ -151,4 +151,5 @@
     <flag name='qxl.vgamem_mb'/>
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='pci-serial'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_2.1.1-1.caps b/tests/qemucapabilitiesdata/caps_2.1.1-1.caps
index b1ee8df1d9..1a39dce90c 100644
--- a/tests/qemucapabilitiesdata/caps_2.1.1-1.caps
+++ b/tests/qemucapabilitiesdata/caps_2.1.1-1.caps
@@ -167,4 +167,5 @@
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='pc-dimm'/>
     <flag name='pci-serial'/>
+    <flag name='ioh3420'/>
   </qemuCaps>
diff --git a/tests/qemuhelptest.c b/tests/qemuhelptest.c
index 507831ca47..621164015e 100644
--- a/tests/qemuhelptest.c
+++ b/tests/qemuhelptest.c
@@ -753,7 +753,8 @@ mymain(void)
             QEMU_CAPS_DEVICE_USB_KBD,
             QEMU_CAPS_DEVICE_USB_STORAGE,
             QEMU_CAPS_SPLASH_TIMEOUT,
-            QEMU_CAPS_DEVICE_IVSHMEM);
+            QEMU_CAPS_DEVICE_IVSHMEM,
+            QEMU_CAPS_DEVICE_IOH3420);
     DO_TEST("qemu-1.1.0", 1001000, 0, 0,
             QEMU_CAPS_VNC_COLON,
             QEMU_CAPS_NO_REBOOT,
@@ -853,7 +854,8 @@ mymain(void)
             QEMU_CAPS_DEVICE_USB_STORAGE,
             QEMU_CAPS_OBJECT_USB_AUDIO,
             QEMU_CAPS_SPLASH_TIMEOUT,
-            QEMU_CAPS_DEVICE_IVSHMEM);
+            QEMU_CAPS_DEVICE_IVSHMEM,
+            QEMU_CAPS_DEVICE_IOH3420);
     DO_TEST_FULL("qemu-1.2.0", 1002000, 0, 0, VIR_ERR_CONFIG_UNSUPPORTED,
             QEMU_CAPS_LAST);
     DO_TEST_FULL("qemu-kvm-1.2.0", 1002000, 1, 0, VIR_ERR_CONFIG_UNSUPPORTED,