text: #ifndef HW_COMPAT_H
  #define HW_COMPAT_H
  
  #define HW_COMPAT_2_4 \
          {\
              .driver   = "virtio-blk-device",\
              .property = "scsi",\
              .value    = "true",\
          },{\
              .driver   = "e1000",\
              .property = "extra_mac_registers",\
              .value    = "off",\
          },{\
              .driver   = "virtio-pci",\
              .property = "x-disable-pcie",\
              .value    = "on",\
          },{\
              .driver   = "virtio-pci",\
              .property = "migrate-extra",\
              .value    = "off",\
          },{\
              .driver   = "fw_cfg_mem",\
              .property = "dma_enabled",\
              .value    = "off",\
          },{\
              .driver   = "fw_cfg_io",\
              .property = "dma_enabled",\
              .value    = "off",\
          },
  
  #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 */
  