$PPFBK Back to Index page
 
Prolog 
Control Block Contents 
   $PPFBK 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.


  $PPFBK Prolog Top of page
 
 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 Top of page
 

 $PPFBK DSECT Top of page
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 Top of page
 
          
*** $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 Top of page
 
 
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
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:58:55 EDT.
Copyright IBM Corporation, 1990, 2022