uapi/linux/vfio.h

403  * migration information. Field accesses from this structure are only supported
437  *        the migration region should be used to resume the device.
468  * 3. Save the state during live migration
486  *    migration region. The sequence to be followed for such transition is given
488  * 3. In live migration of user application, the state transitions from _RUNNING
492  *    the device state data to application through the migration region.
495  *    through the migration region.
498  *    user must not be required to consume all migration data before the device
504  *    received through the migration region to resume the device.
515  *      The user application should read data_offset field from the migration
517  *      offset within the migration region during the _SAVING state or write
523  *      the data copied in the migration region during the _SAVING state and
524  *      write the size in bytes of the data copied in the migration region
527  * The format of the migration region is as follows:
561  *    the migration region.
566  *    migration region.
579  * b. Write migration data starting at the migration region + data_offset for
580  *    the length determined by data_size from the migration source.
582  *    written in the migration region. Vendor driver must return this write
584  *    user-provided migration region data to the device resume state.
589  * example, failing migration or terminating the user application.
1032  * The migration capability allows to report supported features for migration.
1141  * the device; designed to be used when a migration is in progress. Dirty pages