$RTVBK 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.

  $RTVBK Prolog Top of page
 DESCRIPTION: Relocation mapping for HCPRTVBK
 DSECT      : $RTVBK
 FUNCTION   : LGRRTVBK describes those fields of the RTVBK 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 HCPRTVBK 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.
  $RTVBK Control Block Content Top of page

 $RTVBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure $RTVBK Relocation mapping for HCPRTVBK 00000001 $RTV_VER 1 Mapping version number 0000 0 Signed 2 $RTV_HDRL Header length (in bytes) 0002 2 Signed 2 $RTV_BITL Length of mapped bits (in bytes) 0004 4 Signed 4 * Reserved for future use 00000008 $RTV_HDLN *-$RTVBK Length of header (bytes) Bit map: Contains the RTVBK flags that are subject to relocation. These bits are defined sequentially, regardless of how they are defined in HCPRTVBK. 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 $RTV_BITS (0) Bit map area 00000000 $RTV_BLEN *-$RTV_BITS Length of bit map area Data: Contains all HCPRTVBK 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. 0008 8 Bitstring 1 $RTV_DATA (0) Start of data map 0008 8 Bitstring 2 $RTVALLOC Number of RETRIEVE buffers alloc'd 000A 10 Bitstring 2 $RTVBFREQ Number of RETRIEVE buffers requested 000C 12 Bitstring 2 $RTVDFCNT Number of RETRIEVE PF keys defined 000E 14 Bitstring 2 $RTVBFCNT Number of RETRIEVE buffers so far 0010 16 Bitstring 2 $RTVLSRTV Last retrieved entry 00000012 $RTV_LEN *-$RTVBK Total fixed length, in bytes 00000003 $RTV_SZ ($RTV_LEN+7)/8 Size in doublewords The $RTVGSDBK field is repeated (RTVBFCNT) times 0012 18 Bitstring 4 $RTVGSDBK (0) -> RDO offsets to GSDBKs
  $RTVBK Storage Layout Top of page
*** $RTVBK - Relocation mapping for HCPRTVBK
*     +-------------+-------------+---------------------------+
*   0 | $RTV_HDRL   | $RTV_BITL   |///////////////////////////|
*     +-------------+-------------+-------------+-------------+
*     +-------------+-------------+-------------+-------------+
*  10 | $RTVLSRTV   |
*     +-------------+
*** $RTVBK - Relocation mapping for HCPRTVBK
  $RTVBK Cross Reference Top of page
Symbol         Dspl Value
-------------- ---- -----
$RTV_BITL      0002
$RTV_BITS      0008
$RTV_BLEN      0008 00000000
$RTV_DATA      0008
$RTV_HDLN      0004 00000008
$RTV_HDRL      0000
$RTV_LEN       0010 00000012
$RTV_SZ        0010 00000003
$RTV_VER       0000 00000001
$RTVALLOC      0008
$RTVBFCNT      000E
$RTVBFREQ      000A
$RTVDFCNT      000C
$RTVGSDBK      0012
$RTVLSRTV      0010
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