struct controlvm_message_packet cmd;
 };
 
-struct device_map {
-       u64 device_channel_address;
-       u64 device_channel_size;
-       u32 ca_index;
-       u32 reserved;           /* natural alignment */
-       u64 reserved2;          /* Align structure on 32-byte boundary */
-};
-
-struct guest_devices {
-       struct device_map video_channel;
-       struct device_map keyboard_channel;
-       struct device_map network_channel;
-       struct device_map storage_channel;
-       struct device_map console_channel;
-       u32 partition_index;
-       u32 pad;
-};
-
 struct spar_controlvm_channel_protocol {
        struct channel_header header;
        u64 gp_controlvm;       /* guest phys addr of this channel */
        u64 gp_smbios_table;            /* guest phys addr of SMBIOS tables */
        u64 gp_physical_smbios_table;   /* guest phys addr of SMBIOS table  */
        /* ULTRA_MAX_GUESTS_PER_SERVICE */
-       struct guest_devices gp_obsolete_guest_devices[16];
+       char gp_reserved[2688];
 
        /* guest physical address of EFI firmware image base  */
        u64 virtual_guest_firmware_image_base;