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


  $MCVBK Prolog Top of page
 
 NAME       : LGRMCVBK
 DESCRIPTION: Relocation mapping for HCPMCVBK
 DSECT      : $MCVBK
 FUNCTION   : LGRMCVBK describes those fields of the MCVBK 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 HCPMCVBK 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.
 
 
  $MCVBK Control Block Content Top of page
 

 $MCVBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure $MCVBK Relocation mapping for HCPMCVBK 00000001 $MCV_VER 1 Mapping version number 0000 0 Signed 2 $MCV_HDRL Header length (in bytes) 0002 2 Signed 2 $MCV_BITL Length of mapped bits (in bytes) 0004 4 Signed 4 * Reserved for future use 00000008 $MCV_HDLN *-$MCVBK Length of header (bytes) Bit map: Contains the MCVBK flags that are subject to relocation. These bits are defined sequentially, regardless of how they are defined in HCPMCVBK. 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 $MCV_BITS (0) Bit map area 0008 8 Bitstring 1 $MCV0 1... .... $MCVABEND X'80' $MCVABEND MCVFLAG .1.. .... $MCVCKSTP X'40' $MCVCKSTP MCVFLAG ..1. .... $MCVTMOUT X'20' $MCVTMOUT MCVFLAG ...1 .... $MCVCUTOF X'10' $MCVCUTOF MCVFLAG .... 1... $MCVCMPLT X'08' $MCVCMPLT MCVFLAG .... .1.. $MCVQWRK X'04' $MCVQWRK MCVFLAG .... ..1. $MCVSTGFX X'02' $MCVSTGFX MCVFLAG .... ...1 $MCVSTGLS X'01' $MCVSTGLS MCVFLAG 0009 9 Bitstring 1 $MCV1 1... .... $MCVFSIE X'80' $MCVFSIE MCVFLAG2 .1.. .... $MCVHRUN X'40' $MCVHRUN MCVFLAG2 ..1. .... $MCVUNRUN X'20' $MCVUNRUN MCVFLAG2 ...1 .... $MCVSCS X'10' $MCVSCS MCVFLAG2 00000002 $MCV_BLEN *-$MCV_BITS Length of bit map area Data: Contains all HCPMCVBK 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. 000A 10 Bitstring 1 $MCV_DATA (0) Start of data map 000A 10 Bitstring 8 $MCVMCIC Machine check interruption code 0012 18 Bitstring 4 $MCVVMDBK CPUAD of running VMDBK 0016 22 Bitstring 4 $MCVFSAUS 0: MCVFSAUS = MCVVMDBK 1: MCVFSAUS = MCVVMDBK 001A 26 Bitstring 4 $MCVNEXT Next MCVBK 001E 30 Bitstring 4 $MCVEDMDC Machine check external damage code 0022 34 Bitstring 8 $MCVGFAD Guest absolute failing address 0000002A $MCV_LEN *-$MCVBK Total length, in bytes 00000006 $MCV_SZ ($MCV_LEN+7)/8 Size in doublewords
 
 
  $MCVBK Storage Layout Top of page
 
          
*** $MCVBK - Relocation mapping for HCPMCVBK
*
*     +-------------+-------------+---------------------------+
*   0 | $MCV_HDRL   | $MCV_BITL   |///////////////////////////|
*     +------+------+-------------+---------------------------+
*   8 |$MCV0 |$MCV1 |               $MCVMCIC-                 |
*     +------+------+---------------------------+-------------+
*  10 |   -(00A)    |        $MCVVMDBK          | $MCVFSAUS-  |
*     +-------------+---------------------------+-------------+
*  18 |   -(016)    |         $MCVNEXT          | $MCVEDMDC-  |
*     +-------------+---------------------------+-------------+
*  20 |   -(01E)    |               $MCVGFAD-                 |
*     +-------------+-----------------------------------------+
*  28 |   -(022)    | 2A
*     +-------------+
*
*** $MCVBK - Relocation mapping for HCPMCVBK
 
 
  $MCVBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
$MCV_BITL      0002
$MCV_BITS      0008
$MCV_BLEN      0009 00000002
$MCV_DATA      000A
$MCV_HDLN      0004 00000008
$MCV_HDRL      0000
$MCV_LEN       0022 0000002A
$MCV_SZ        0022 00000006
$MCV_VER       0000 00000001
$MCVABEND      0008 80
$MCVCKSTP      0008 40
$MCVCMPLT      0008 08
$MCVCUTOF      0008 10
$MCVEDMDC      001E
$MCVFSAUS      0016
$MCVFSIE       0009 80
$MCVGFAD       0022
$MCVHRUN       0009 40
$MCVMCIC       000A
$MCVNEXT       001A
$MCVQWRK       0008 04
$MCVSCS        0009 10
$MCVSTGFX      0008 02
$MCVSTGLS      0008 01
$MCVTMOUT      0008 20
$MCVUNRUN      0009 20
$MCVVMDBK      0012
$MCV0          0008
$MCV1          0009
 
This information is based on z/VM 6.3.0 Last updated on 22 May 2013 at 13:56:36 EDT.
Copyright IBM Corporation, 1990, 2013