PTRMB Back to Index page
 
Prolog 
Control Block Contents 
   PTRMB 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.


  PTRMB Prolog Top of page
  
 NAME       : HCPPTRMB
 DESCRIPTION: Page Table Resource Management block
 DSECT      : PTRMB
 FUNCTION   : Contains information used in managing
              (allocation and re-organization of) a PTRM
              address space.
 LOCATED BY : ASCTYPTR field of ASCBK points to a CAABK.  This
              control block starts at CAAFSI (function specific
              information) section of the CAABK.
 CREATED BY : HCPHRPIN, when creating a PTRM address space
 DELETED BY : Once created it is never deleted.
 SERIALIZED :
 RELOCATION CONSIDERATIONS : None
 COMMENTS   :
              The PTRM reorganization fields were moved from this
              PTRM specific control block to the more general,
              CAABK.  This was because HCPHSURO, HCPHAMAP and
              HCPHAMDP now manage other System Utility address
              spaces (like the ISFC address space, ASCUCONN in
              ASCSUTYP).
 
 
  PTRMB Control Block Content Top of page
  




 PTRMB DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      PTRMB          Page Table Resource Management block
0000    0 Bitstring    1 PTRINDEX       Index of the RSAASITB entry that
                                        describes address space.
                                        Serialized by RSAPRLK.
0001    1 Bitstring    1 * (3)          Reserved for IBM use
0004    4 Signed       4 * (3)          Reserved for IBM use
          00000002       PTRSIZE        (*-PTRMB+7)/8 Size, in
                                        doublewords, of PTRMB.
 
 
  PTRMB Storage Layout Top of page
  
          
*** PTRMB - Page Table Resource Management block
*
*     +------+--------------------+---------------------------+
*   0 |:INDEX|////////////////////|///////////////////////////|
*     +------+--------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  10
*
*** PTRMB - Page Table Resource Management block
 
 
  PTRMB Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
PTRINDEX       0000
PTRSIZE        0004 00000002
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:53:53 EDT.
Copyright IBM Corporation, 1990, 2022