--- /dev/null
+#ifndef HW_COMPAT_H
+#define HW_COMPAT_H
+
+#define HW_COMPAT_2_3 \
+ {\
+ .driver = "virtio-blk-pci",\
+ .property = "any_layout",\
+ .value = "off",\
+ },{\
+ .driver = "virtio-balloon-pci",\
+ .property = "any_layout",\
+ .value = "off",\
+ },{\
+ .driver = "virtio-serial-pci",\
+ .property = "any_layout",\
+ .value = "off",\
+ },{\
+ .driver = "virtio-9p-pci",\
+ .property = "any_layout",\
+ .value = "off",\
+ },{\
+ .driver = "virtio-rng-pci",\
+ .property = "any_layout",\
+ .value = "off",\
+ },
+
+#define HW_COMPAT_2_2 \
+ /* empty */
+
+#define HW_COMPAT_2_1 \
+ {\
+ .driver = "intel-hda",\
+ .property = "old_msi_addr",\
+ .value = "on",\
+ },{\
+ .driver = "VGA",\
+ .property = "qemu-extended-regs",\
+ .value = "off",\
+ },{\
+ .driver = "secondary-vga",\
+ .property = "qemu-extended-regs",\
+ .value = "off",\
+ },{\
+ .driver = "virtio-scsi-pci",\
+ .property = "any_layout",\
+ .value = "off",\
+ },{\
+ .driver = "usb-mouse",\
+ .property = "usb_version",\
+ .value = stringify(1),\
+ },{\
+ .driver = "usb-kbd",\
+ .property = "usb_version",\
+ .value = stringify(1),\
+ },{\
+ .driver = "virtio-pci",\
+ .property = "virtio-pci-bus-master-bug-migration",\
+ .value = "on",\
+ },
+
+#endif /* HW_COMPAT_H */