NAME       : HCPPPFBK
 DESCRIPTION: PSEUDO PAGE FAULT STACK BLOCK
 DSECT      : PPFBK
 FUNCTION   : A PPFBK REPRESENTS AN INSTANCE OF A PSEUDO
              PAGE FAULT.  THESE BLOCKS ARE CONNECTED TO
              ONE OF TWO CHAINS FROM THE VMDBK.
              THE CHAIN ANCHORED BY VMDPPFPT IS ALL PPFBKS
              REPRESENTING RESOLVED PSEUDO PAGE FAULTS IN THE
              primary address space for PAGEX whose
              INTERRUPT HAS NOT BEEN REFLECTED TO THE GUEST.
              THE CHAIN ANCHORED BY VMDPPFAR REPRESENTS
              primary address space page faults for version
              2 of PFAULT support as well as either version's
              AR-specified page faults.  They can be in various
              states of processing as indicated by PPFSTAT.
 LOCATED BY : PPFPNT   - CHAIN OF PPFBKS
              VMDPPFPT - Field of HCPVMDBK (PAGEX)
              VMDPPFAR - Field of HCPVMDBK (PFAULT)
 CREATED BY : HCPVIP
 DELETED BY : HCPPPF, HCPVIP
 SERIALIZED : Dispatch lock for contents and chains
 RELOCATION CONSIDERATIONS : This control block is relocated as part of a live
              guest relocation (LGR).  The bits and fields that
              need to be relocated are defined in the
              corresponding LGRPPFBK COPY file.  Whenever changes
              are made to this control block, consideration must
              be given to any effects these changes will have on
              a relocation.  If any new fields or bits are
              defined, they may need to be relocated.  If
              existing bits or fields are changed, corresponding
              modifications may be required in the LGR version of
              this control block.  Consider also the effects of
              these changes on a relocation involving a back-level
              release of CP.

 PPFBK DSECT
Top of page

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      PPFBK          PSEUDO PAGE FAULT STACK BLOCK
0000    0 Signed       4 PPFPNT         POINTER TO NEXT PPFBLOK ON STACK
0004    4 Signed       4 PPFALET        Effective host ALET associated
                                        with page fault. ALET may be 0.
0008    8 Dbl-Word     8 * (0)
0008    8 Address      8 PPFGADDR       64-bit host virtual page fault @
0008    8 Signed       4 *              High half, host virt pg fault @
000C   12 Signed       4 PPFADDR        31-bit virtual page fault addr
        THE REMAINING FIELDS OF THE PPFBK ARE USED ONLY FOR
        page faults which use the PFAULT interface
0010   16 Signed       8 * (0)
0010   16 Bitstring   16 PPFGPSW        Guest PSW at time of page fault
                                        in 64-bit image of CP
0010   16 Signed       8 PPFPSW         Guest PSW at time of page fault
                                        in 32-bit image of CP
0018   24 Signed       8 *              Low half of z/Arch guest PSW
0020   32 Signed       8 PPFGTOKEN      z/Architecture user defined page
                                        fault token
0020   32 Signed       4 *              Not used for ESA guest
0024   36 Signed       4 PPFTOKEN       ESA user defined pg fault token
0028   40 Signed       8 PPFGBADDR      z/Architecture user base register
                                        contents for AR qualified fault
0028   40 Signed       4 *
002C   44 Signed       4 PPFBADDR       ESA user base register contents
                                        for AR qualified page fault
0030   48 Signed       4 PPFVMDBK       ADDRESS OF PAGE FAULTING VMDBK
0034   52 Bitstring    1 PPFAREG        ACCESS REGISTER OF PAGE FAULT
0035   53 Bitstring    1 PPFSTAT        STATE OF AR-SPECIFIED PAGE FAULT
                                        THESE STATES ARE MUTUALLY
                                        EXCLUSIVE
          1... ....      PPFSCHIN       X'80' PPFSCHIN SCHEDULED FOR
                                        INITIATION INTERUPT
          .1.. ....      PPFCANCL       X'40' PPFCANCL INITIATION
                                        INTERUPT CANCELED
          ..1. ....      PPFREFLT       X'20' PPFREFLT INITIATION
                                        INTERUPT WAS REFLECTED
          ...1 ....      PPFRESLD       X'10' PPFRESLD PAGE FAULT HAS
                                        BEEN RESOLVED
          .... 1...      PPFSCHCO       X'08' PPFSCHCO SCHEDULED FOR
                                        COMPLETION INTERUPT
0036   54 Bitstring    1 * (2)          RESERVED
          00000007       PPFBSIZE       (*-PPFBK+7)/8 PPF BLOCK SIZE IN
                                        DOUBLE WORDS

          
*** PPFBK - PSEUDO PAGE FAULT STACK BLOCK
*
*     +---------------------------+---------------------------+
*   0 |          PPFPNT           |         PPFALET           |
*     +---------------------------+---------------------------+
*   8 |                       PPFGADDR                        |
*     +-------------------------------------------------------+
*  10
*
*** PPFBK - PSEUDO PAGE FAULT STACK BLOCK
          
*** Overlay for PPFGADDR in PPFBK
*
*     +---------------------------+---------------------------+
*   8 |///////////////////////////|         PPFADDR           |
*     +---------------------------+---------------------------+
*  10 |                       PPFGPSW                         |
*     |                                                       |
*     +-------------------------------------------------------+
*  20
*
*** Overlay for PPFGADDR in PPFBK
          
*** Overlay for PPFGPSW in PPFBK
*
*     +-------------------------------------------------------+
*  10 |                        PPFPSW                         |
*     +-------------------------------------------------------+
*  18 |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  20 |                      PPFGTOKEN                        |
*     +-------------------------------------------------------+
*  28
*
*** Overlay for PPFGPSW in PPFBK
          
*** Overlay for PPFGTOKEN in PPFBK
*
*     +---------------------------+---------------------------+
*  20 |///////////////////////////|         PPFTOKEN          |
*     +---------------------------+---------------------------+
*  28 |                      PPFGBADDR                        |
*     +-------------------------------------------------------+
*  30
*
*** Overlay for PPFGTOKEN in PPFBK
          
*** Overlay for PPFGBADDR in PPFBK
*
*     +---------------------------+---------------------------+
*  28 |///////////////////////////|         PPFBADDR          |
*     +---------------------------+------+------+-------------+
*  30 |         PPFVMDBK          |:AREG |:STAT |/////////////|
*     +---------------------------+------+------+-------------+
*  38
*
*** Overlay for PPFGBADDR in PPFBK

 
Symbol         Dspl Value
-------------- ---- -----
PPFADDR        000C
PPFALET        0004
PPFAREG        0034
PPFBADDR       002C
PPFBSIZE       0036 00000007
PPFCANCL       0035 40
PPFGADDR       0008
PPFGBADDR      0028
PPFGPSW        0010
PPFGTOKEN      0020
PPFPNT         0000
PPFPSW         0010
PPFREFLT       0035 20
PPFRESLD       0035 10
PPFSCHCO       0035 08
PPFSCHIN       0035 80
PPFSTAT        0035
PPFTOKEN       0024
PPFVMDBK       0030