$PSGBK Back to Index page
Control Block Contents 
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.

  $PSGBK Prolog Top of page
 DESCRIPTION: Relocation mapping for HCPPSGBK
 DSECT      : $PSGBK
 FUNCTION   : LGRPSGBK describes those fields of the PSGBK 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 HCPPSGBK 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.
  $PSGBK Control Block Content Top of page

 $PSGBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure $PSGBK Relocation mapping for HCPPSGBK 00000001 $PSG_VER 1 Mapping version number 0000 0 Signed 2 $PSG_HDRL Header length (in bytes) 0002 2 Signed 2 $PSG_BITL Length of mapped bits (in bytes) 0004 4 Signed 4 * Reserved for future use 00000008 $PSG_HDLN *-$PSGBK Length of header (bytes) Bit map: Contains the PSGBK flags that are subject to relocation. These bits are defined sequentially, regardless of how they are defined in HCPPSGBK. 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 $PSG_BITS (0) Bit map area 0008 8 Bitstring 1 $PSG0 1... .... $PSGINPXI X'80' $PSGINPXI PSGFLAG 00000001 $PSG_BLEN *-$PSG_BITS Length of bit map area Data: Contains all HCPPSGBK 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. 0009 9 Bitstring 1 $PSG_DATA (0) Start of data map 0009 9 Bitstring 4 $PSGCOUNT Count of supplementary GIDs 000D 13 Bitstring 4 $PSGPXICT Count of referring PXIBKs 0011 17 Bitstring 4 $PSGSGIDS -> RDO offset to list of SGIDs 00000015 $PSG_LEN *-$PSGBK Total length, in bytes 00000003 $PSG_SZ ($PSG_LEN+7)/8 Size in doublewords
  $PSGBK Storage Layout Top of page
*** $PSGBK - Relocation mapping for HCPPSGBK
*     +-------------+-------------+---------------------------+
*   0 | $PSG_HDRL   | $PSG_BITL   |///////////////////////////|
*     +------+------+-------------+------+--------------------+
*   8 |$PSG0 |        $PSGCOUNT          |    $PSGPXICT-      |
*     +------+---------------------------+--------------------+
*  10 |-(00D)|        $PSGSGIDS          | 15
*     +------+---------------------------+
*** $PSGBK - Relocation mapping for HCPPSGBK
  $PSGBK Cross Reference Top of page
Symbol         Dspl Value
-------------- ---- -----
$PSG_BITL      0002
$PSG_BITS      0008
$PSG_BLEN      0008 00000001
$PSG_DATA      0009
$PSG_HDLN      0004 00000008
$PSG_HDRL      0000
$PSG_LEN       0011 00000015
$PSG_SZ        0011 00000003
$PSG_VER       0000 00000001
$PSGCOUNT      0009
$PSGINPXI      0008 80
$PSGPXICT      000D
$PSGSGIDS      0011
$PSG0          0008
This information is based on z/VM 6.3.0 Last updated on 22 May 2013 at 13:56:38 EDT.
Copyright IBM Corporation, 1990, 2013