PPRLG

Prolog  

Control Block Contents  
   PPRLG DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

PPRLG Prolog

 NAME       : HCPPPRLG
 DESCRIPTION: Pending Page Release Log
 DSECT      : PPRLG
 FUNCTION   : This block contains address pairs that represent
              guest real page frames that are in the pending
              release state.
 LOCATED BY : VMDPPRLG points to the PPRLG for that guest.
 CREATED BY : HCPFST when DIAG 214 is issued and no log exits
 DELETED BY : HCPPPRFR after processing the log.
 RELOCATION CONSIDERATIONS : None

PPRLG Control Block Content

PPRLG DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      PPRLG          Pending Page Release Log
0000    0 Dbl-Word     8 PPRLGENT       PPRLG entry
          00000008       PPRLGESZ       *-PPRLGENT PPRLG entry size in
                                        bytes
0008    8 Dbl-Word     8 * (120)        Log (56-small, 120-large)
          000003C8       PPRLGOFS       *-PPRLG Displacement to Last
                                        entry
03C8  968 Dbl-Word     8 PPRLE          Last entry
          000003D0       PPRLGSZ        *-PPRLG Log size in bytes
03D0  976 Dbl-Word     8 PPRIASIT       I-ASIT for log's space
03D8  984 Bitstring    1 PPRFLAG        Flag byte
          1... ....      PPRSTKD        X'80' PPRSTKD HCPPPRDF call
                                        stacked This flag is set to
                                        indicate that HCPPPRFR/KP/KL has
                                        been unable to completely process
                                        the PPRLG, and has stacked a call
                                        to entry HCPPPRDF. If a
                                        subsequent invocation of one of
                                        HCPPPRFR/KP/KL occurs prior to
                                        the unstack of the call to
                                        HCPPPRDF, this flag will inform
                                        HCPPPRFR/KP/KL that call to
                                        HCPPPRDF is already stacked, and
                                        another one is not necessary.
          .1.. ....      PPRFRET        X'40' PPRFRET HCPPPRFR requests
                                        log fret This flag is set to
                                        indicate to HCPPPRDF that it
                                        should NOT process the log, just
                                        fret it. HCPPPRFR sets it if
                                        PPRSTKD is already set.
03D9  985 Bitstring    1 * (7)          reserved
          0000007C       PPRLGDWD       (*-PPRLG+7)/8 Log size + lock in
                                        Dwds. Total size + hdrs = 128DW
0000    0 Signed       4 PPRLO          Low page range
0004    4 Signed       4 PPRHI          High address of range

PPRLG Storage Layout

          
*** PPRLG - Pending Page Release Log
*
*     +-------------------------------------------------------+
*   0 |                       PPRLGENT                        |
*     +-------------------------------------------------------+
*   8 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 3C8 |                        PPRLE                          |
*     +-------------------------------------------------------+
* 3D0 |                       PPRIASIT                        |
*     +------+------------------------------------------------+
* 3D8 |:FLAG |////////////////////////////////////////////////|
*     +------+------------------------------------------------+
* 3E0
*
*** PPRLG - Pending Page Release Log
          
*** Overlay for PPRLGENT in PPRLG
*
*     +---------------------------+---------------------------+
*   0 |          PPRLO            |          PPRHI            |
*     +---------------------------+---------------------------+
*   8
*
*** Overlay for PPRLGENT in PPRLG

PPRLG Cross Reference

Symbol         Dspl Value
-------------- ---- -----
PPRFLAG        03D8
PPRFRET        03D8 40
PPRHI          0004
PPRIASIT       03D0
PPRLE          03C8
PPRLGDWD       03D9 0000007C
PPRLGENT       0000
PPRLGESZ       0000 00000008
PPRLGOFS       0008 000003C8
PPRLGSZ        03C8 000003D0
PPRLO          0000
PPRSTKD        03D8 80