diff --git a/hw/hw.h b/hw/hw.h
index 9dd7096..df6ca65 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -324,6 +324,7 @@
 
 struct VMStateDescription {
     const char *name;
+    int unmigratable;
     int version_id;
     int minimum_version_id;
     int minimum_version_id_old;
diff --git a/hw/ide/ich.c b/hw/ide/ich.c
index 054e073..d241ea8 100644
--- a/hw/ide/ich.c
+++ b/hw/ide/ich.c
@@ -72,6 +72,11 @@
 #include <hw/ide/pci.h>
 #include <hw/ide/ahci.h>
 
+static const VMStateDescription vmstate_ahci = {
+    .name = "ahci",
+    .unmigratable = 1,
+};
+
 static int pci_ich9_ahci_init(PCIDevice *dev)
 {
     struct AHCIPCIState *d;
@@ -123,6 +128,7 @@
         .qdev.name    = "ich9-ahci",
         .qdev.alias   = "ahci",
         .qdev.size    = sizeof(AHCIPCIState),
+        .qdev.vmsd    = &vmstate_ahci,
         .init         = pci_ich9_ahci_init,
         .exit         = pci_ich9_uninit,
         .config_write = pci_ich9_write_config,
diff --git a/hw/usb-bt.c b/hw/usb-bt.c
index e364513..4557802 100644
--- a/hw/usb-bt.c
+++ b/hw/usb-bt.c
@@ -548,10 +548,16 @@
     return dev;
 }
 
+static const VMStateDescription vmstate_usb_bt = {
+    .name = "usb-bt",
+    .unmigratable = 1,
+};
+
 static struct USBDeviceInfo bt_info = {
     .product_desc   = "QEMU BT dongle",
     .qdev.name      = "usb-bt-dongle",
     .qdev.size      = sizeof(struct USBBtState),
+    .qdev.vmsd      = &vmstate_usb_bt,
     .usb_desc       = &desc_bluetooth,
     .init           = usb_bt_initfn,
     .handle_packet  = usb_generic_handle_packet,
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c
index a4758f9..8b0dcc3 100644
--- a/hw/usb-ehci.c
+++ b/hw/usb-ehci.c
@@ -2244,6 +2244,11 @@
     .register_companion = ehci_register_companion,
 };
 
+static const VMStateDescription vmstate_ehci = {
+    .name = "ehci",
+    .unmigratable = 1,
+};
+
 static Property ehci_properties[] = {
     DEFINE_PROP_UINT32("freq",      EHCIState, freq, FRAME_TIMER_FREQ),
     DEFINE_PROP_UINT32("maxframes", EHCIState, maxframes, 128),
@@ -2254,6 +2259,7 @@
     {
         .qdev.name    = "usb-ehci",
         .qdev.size    = sizeof(EHCIState),
+        .qdev.vmsd    = &vmstate_ehci,
         .init         = usb_ehci_initfn,
         .vendor_id    = PCI_VENDOR_ID_INTEL,
         .device_id    = PCI_DEVICE_ID_INTEL_82801D, /* ich4 */
@@ -2263,6 +2269,7 @@
     },{
         .qdev.name    = "ich9-usb-ehci1",
         .qdev.size    = sizeof(EHCIState),
+        .qdev.vmsd    = &vmstate_ehci,
         .init         = usb_ehci_initfn,
         .vendor_id    = PCI_VENDOR_ID_INTEL,
         .device_id    = PCI_DEVICE_ID_INTEL_82801I_EHCI1,
diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index 6391dad..cdeac58 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -616,11 +616,23 @@
     return dev;
 }
 
+static const VMStateDescription vmstate_usb_msd = {
+    .name = "usb-storage",
+    .unmigratable = 1, /* FIXME: handle transactions which are in flight */
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField []) {
+        VMSTATE_USB_DEVICE(dev, MSDState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 static struct USBDeviceInfo msd_info = {
     .product_desc   = "QEMU USB MSD",
     .qdev.name      = "usb-storage",
     .qdev.fw_name      = "storage",
     .qdev.size      = sizeof(MSDState),
+    .qdev.vmsd      = &vmstate_usb_msd,
     .usb_desc       = &desc,
     .init           = usb_msd_initfn,
     .handle_packet  = usb_generic_handle_packet,
diff --git a/hw/usb-net.c b/hw/usb-net.c
index 9be709f..4212e5b 100644
--- a/hw/usb-net.c
+++ b/hw/usb-net.c
@@ -1414,11 +1414,17 @@
     return dev;
 }
 
+static const VMStateDescription vmstate_usb_net = {
+    .name = "usb-net",
+    .unmigratable = 1,
+};
+
 static struct USBDeviceInfo net_info = {
     .product_desc   = "QEMU USB Network Interface",
     .qdev.name      = "usb-net",
     .qdev.fw_name    = "network",
     .qdev.size      = sizeof(USBNetState),
+    .qdev.vmsd      = &vmstate_usb_net,
     .usb_desc       = &desc_net,
     .init           = usb_net_initfn,
     .handle_packet  = usb_generic_handle_packet,
diff --git a/hw/usb-serial.c b/hw/usb-serial.c
index c69c437..298c1e9 100644
--- a/hw/usb-serial.c
+++ b/hw/usb-serial.c
@@ -566,10 +566,16 @@
     return dev;
 }
 
+static const VMStateDescription vmstate_usb_serial = {
+    .name = "usb-serial",
+    .unmigratable = 1,
+};
+
 static struct USBDeviceInfo serial_info = {
     .product_desc   = "QEMU USB Serial",
     .qdev.name      = "usb-serial",
     .qdev.size      = sizeof(USBSerialState),
+    .qdev.vmsd      = &vmstate_usb_serial,
     .usb_desc       = &desc_serial,
     .init           = usb_serial_initfn,
     .handle_packet  = usb_generic_handle_packet,
@@ -589,6 +595,7 @@
     .product_desc   = "QEMU USB Braille",
     .qdev.name      = "usb-braille",
     .qdev.size      = sizeof(USBSerialState),
+    .qdev.vmsd      = &vmstate_usb_serial,
     .usb_desc       = &desc_braille,
     .init           = usb_serial_initfn,
     .handle_packet  = usb_generic_handle_packet,
diff --git a/hw/usb-wacom.c b/hw/usb-wacom.c
index 9d348e1..d76ee97 100644
--- a/hw/usb-wacom.c
+++ b/hw/usb-wacom.c
@@ -349,6 +349,11 @@
     return 0;
 }
 
+static const VMStateDescription vmstate_usb_wacom = {
+    .name = "usb-wacom",
+    .unmigratable = 1,
+};
+
 static struct USBDeviceInfo wacom_info = {
     .product_desc   = "QEMU PenPartner Tablet",
     .qdev.name      = "usb-wacom-tablet",
@@ -356,6 +361,7 @@
     .usbdevice_name = "wacom-tablet",
     .usb_desc       = &desc_wacom,
     .qdev.size      = sizeof(USBWacomState),
+    .qdev.vmsd      = &vmstate_usb_wacom,
     .init           = usb_wacom_initfn,
     .handle_packet  = usb_generic_handle_packet,
     .handle_reset   = usb_wacom_handle_reset,
diff --git a/savevm.c b/savevm.c
index 79db4cb..7801aa7 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1234,6 +1234,7 @@
     se->opaque = opaque;
     se->vmsd = vmsd;
     se->alias_id = alias_id;
+    se->no_migrate = vmsd->unmigratable;
 
     if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
         char *id = dev->parent_bus->info->get_dev_path(dev);