• Peter Oberparleiter's avatar
    [S390] cio: introduce parent-initiated device move · 5d6e6b6f
    Peter Oberparleiter authored
    Change the initiative to update subchannel-ccw device associations
    to the subchannel: when there is an indication that the internal
    association no longer reflects the current hardware state, mark
    each affected subchannel as requiring attention. Once processing
    reaches a subchannel, determine the correct association for that
    subchannel at that time and perform the necessary device_move
    operations.
    
    This change fixes problems with the previous approach which would
    leave devices in an inconsistent state when a new hardware change
    occurred while a device_move was already scheduled.
    Signed-off-by: default avatarPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    5d6e6b6f
css.c 26.2 KB