AMTE Back to Index page
 
Prolog 
Control Block Contents 
   AMTE DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  AMTE Prolog Top of page
  
 NAME       : HCPAMTE
 DESCRIPTION: ASIT Management Table Entry for PTRM
              i-ASITs
 DSECT      : AMTE
 FUNCTION   : There is one ASIT Management Entry for each PTRM
              address space.  The ASIT Management Table resides
              in a free storage block pointed to by RSAASITB in
              the RSMBK, and contains multiple table entries.
              The ASIT Management Table contains entries that
              are either marked invalid (AMTINVAL on) or
              contain the i-ASIT for a PTRM address space.
 LOCATED BY : RSAASITB - ASIT table for the PTRM address spaces
              RSAASITB + (Address space index * AMTLENTH)
              AMTNEXT  - the next contiguous AMTE
 CREATED BY :
              All entries are initialized (validated) by HCPHRPIN
              during system initialization.
 DELETED BY : none
 SERIALIZED : RSAAFLK - PTRM i-ASIT Resolution Lock
 RELOCATION CONSIDERATIONS : None
 COMMENTS   : none
 
 
  AMTE Control Block Content Top of page
  




 AMTE DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      AMTE           ASIT Management Table Entry for PTRM
0000    0 Dbl-Word     8 AMTENTRY       A PTRM address space's i-ASIT
          00000008       AMTLENTH       *-AMTENTRY Length of an ASIT
                                        Management Table Entry
0008    8 Dbl-Word     8 AMTNEXT (0)    Next AMTENTRY
0000    0 Signed       4 AMTASTEW       When = AMTINVAL, this AMTE is
                                        invalid, Otherwise, = ASTEO and
                                        capability bits
0004    4 Signed       4 AMTSN          Sequence number part of i-ASIT
                                        valid only when AMTASTEW ^=
                                        AMTINVAL
          .... ....      AMTINVAL       X'80000000' Invalid AMTE value
                                        for AMTASTEW
 
 
  AMTE Storage Layout Top of page
  
          
*** AMTE - ASIT Management Table Entry for PTRM
*
*     +-------------------------------------------------------+
*   0 |                       AMTENTRY                        |
*     +-------------------------------------------------------+
*
*** AMTE - ASIT Management Table Entry for PTRM
          
*** Overlay for AMTENTRY in AMTE
*
*     +---------------------------+---------------------------+
*   0 |         AMTASTEW          |          AMTSN            |
*     +---------------------------+---------------------------+
*   8
*
*** Overlay for AMTENTRY in AMTE
 
 
  AMTE Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
AMTASTEW       0000
AMTENTRY       0000
AMTINVAL       0004 00
AMTLENTH       0000 00000008
AMTNEXT        0008
AMTSN          0004
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:47:14 EDT.
Copyright IBM Corporation, 1990, 2022