VMS Help MACRO, /MIGRATION, Locking Pages into a Working Set  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Five macros are provided for locking pages into a working set.
    These macros reside in SYS$LIBRARY:LIB.MLB.

    Three macros are used for image initialization-time lockdown, and
    two macros are used for on-the-fly lockdown.

                                   NOTE

       If the code is being locked because the IPL will be raised
       above 2, where page faults cannot occur, make sure that
       the delimited code does not call run-time library or other
       procedures. The VAX MACRO compiler generates calls to
       routines to emulate certain VAX instructions. An image that
       uses these macros must link against the system base image so
       that references to these routines are resolved by code in a
       nonpageable executive image.

  Additional Information (explode) :

• Image Initialization-Time Lockdown
• On-the-Fly Lockdown