$PPFBK

Prolog  

Control Block Contents  
   $PPFBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

$PPFBK Prolog

 NAME       : LGRPPFBK
 DESCRIPTION: Relocation mapping for HCPPPFBK
 DSECT      : $PPFBK
 FUNCTION   : LGRPPFBK describes those fields of the PPFBK that
              will be migrated to the destination system during
              guest relocation.
 LOCATED BY : This is a mapping of the RDODATA area within the
              RDOBK during guest relocation.
 RELOCATION CONSIDERATIONS : This control block is used during live guest
              relocation.  It is used to relocate a control block
              defined in a corresponding HCP COPY file.  Any
              fields or bits defined in HCPPPFBK which are
              required on the destination system must be defined
              here, and code must be added to migrate the field
              or bit during a relocation.

$PPFBK Control Block Content

$PPFBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      $PPFBK         Relocation mapping for HCPPPFBK
          00000001       $PPF_VER       1 Mapping version number
0000    0 Signed       2 $PPF_HDRL      Header length (in bytes)
0002    2 Signed       2 $PPF_BITL      Length of mapped bits (in bytes)
0004    4 Signed       4 *              Reserved for future use
          00000008       $PPF_HDLN      *-$PPFBK Length of header (bytes)
      Bit map: Contains the PPFBK flags that are subject to
               relocation. These bits are defined sequentially,
               regardless of how they are defined in HCPPPFBK.
               This yields a consistent mapping that ensures
               compatibility when a guest is relocated between
               systems at differing service levels.
               Names in the comments column indicate the control
               block byte which contains the flag. This name is
               subject to change if the flag definition changes.
         ====> NEVER change bits which already exist here.
         ====> NEVER change the order of bits in this section.
         ====> ALWAYS add new bits at the end of this section,
               together with new flag bytes as required.
0008    8 Signed       2 $PPF_BITS (0)  Bit map area
0008    8 Bitstring    1 $PPF0
          1... ....      $PPFSCHIN      X'80' $PPFSCHIN PPFSTAT
          .1.. ....      $PPFCANCL      X'40' $PPFCANCL PPFSTAT
          ..1. ....      $PPFREFLT      X'20' $PPFREFLT PPFSTAT
          ...1 ....      $PPFRESLD      X'10' $PPFRESLD PPFSTAT
          .... 1...      $PPFSCHCO      X'08' $PPFSCHCO PPFSTAT
          00000001       $PPF_BLEN      *-$PPF_BITS Length of bit map
                                        area
      Data:    Contains all HCPPPFBK data that is subject to
               relocation, except for flag bits, which are
               handled separately.
               All fields are defined as XLnn to avoid alignment
               warnings and to pack the data efficiently.
         ====> NEVER change fields which already exist here.
         ====> NEVER change the order of fields in this section.
         ====> ALWAYS add new fields at the end of this section.
               together with new flag bytes as required.
0009    9 Bitstring    1 $PPF_DATA (0)  Start of data map
0009    9 Bitstring    4 $PPFPNT        -> RDO offset to next $PPFBK
000D   13 Bitstring    4 $PPFALET       Effective host ALET
0011   17 Bitstring    8 $PPFGADDR      Host virtual page fault addr
0019   25 Bitstring   16 $PPFGPSW       Guest PSW at time of page fault
0029   41 Bitstring    8 $PPFGTOKEN     User-defined page fault token
0031   49 Bitstring    8 $PPFGBADDR     User base register contents
0039   57 Bitstring    4 $PPFVMDBK      Address of page-faulting VMDBK
003D   61 Bitstring    1 $PPFAREG       Access register of page fault
          0000003E       $PPF_LEN       *-$PPFBK Total length, in bytes
          00000008       $PPF_SZ        ($PPF_LEN+7)/8 Size in
                                        doublewords

$PPFBK Storage Layout

          
*** $PPFBK - Relocation mapping for HCPPPFBK
*
*     +-------------+-------------+---------------------------+
*   0 | $PPF_HDRL   | $PPF_BITL   |///////////////////////////|
*     +------+------+-------------+------+--------------------+
*   8 |$PPF0 |         $PPFPNT           |     $PPFALET-      |
*     +------+---------------------------+--------------------+
*  10 |-(00D)|                  $PPFGADDR-                    |
*     +------+------------------------------------------------+
*  18 |-(011)|                                                |
*     +------+                                                |
*     |                       $PPFGPSW                        |
*     |      +------------------------------------------------+
*     |      |                  $PPFGTOKEN-                   |
*     +------+------------------------------------------------+
*  30 |-(029)|                  $PPFGBADDR-                   |
*     +------+---------------------------+------+-------------+
*  38 |-(031)|        $PPFVMDBK          |:FAREG| 3E
*     +------+---------------------------+------+
*
*** $PPFBK - Relocation mapping for HCPPPFBK

$PPFBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
$PPF_BITL      0002
$PPF_BITS      0008
$PPF_BLEN      0008 00000001
$PPF_DATA      0009
$PPF_HDLN      0004 00000008
$PPF_HDRL      0000
$PPF_LEN       003D 0000003E
$PPF_SZ        003D 00000008
$PPF_VER       0000 00000001
$PPFALET       000D
$PPFAREG       003D
$PPFCANCL      0008 40
$PPFGADDR      0011
$PPFGBADDR     0031
$PPFGPSW       0019
$PPFGTOKEN     0029
$PPFPNT        0009
$PPFREFLT      0008 20
$PPFRESLD      0008 10
$PPFSCHCO      0008 08
$PPFSCHIN      0008 80
$PPFVMDBK      0039
$PPF0          0008