On Alpha and Integrity server systems, creates a permanent page
    frame section to which processes can map.

    This service accepts 64-bit addresses.

    Format

      SYS$CREATE_GPFN  gs_name_64 ,ident_64 ,prot ,start_pfn

                       ,page_count ,acmode ,flags

    C Prototype

      int sys$create_gpfn  (void *gs_name_64, struct _secid

                           *ident_64, unsigned int prot, unsigned

                           int start_pfn, unsigned int page_count,

                           unsigned int acmode, unsigned int flags);