PTRMB - 64-bit CP - V4R4.0

Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### PTRMB

Prolog

Control Block Contents
PTRMB DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### PTRMB Prolog

     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 : HCPPRPIN, when creating a PTRM address space
     DELETED BY : Once created it is never deleted.
     SERIALIZED :
     Comments   :
                  The PTRM reorganization fields were moved from this
                  PTRM specific control block to the more general,
                  CAABK.  This was because HCPASURO, HCPVAMAP and
                  HCPVAMDP now manage other System Utility address
                  spaces (like the ISFC address space, ASCUCONN in
                  ASCSUTYP).

#### PTRMB Control Block Content

#### PTRMB DSECT

    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

    *** PTRMB - Page Table Resource Management block
    *
    *     +------+--------------------+---------------------------+
    *   0 |:INDEX|////////////////////|///////////////////////////|
    *     +------+--------------------+///////////////////////////|
    *     |///////////////////////////////////////////////////////|
    *     +-------------------------------------------------------+
    *  10
    *
    *** PTRMB - Page Table Resource Management block

#### PTRMB Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    PTRINDEX       0000
    PTRSIZE        0004 00000002

This information is based on z/VM V4R4.0. Last updated on 30 Jul 2003 at 13:07:35 EDT.
Copyright IBM Corporation, 1990, 2003