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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure $CHCBK Relocation mapping for HCPCHCBK
00000001 $CHC_VER 1 Mapping version number for this
DSECT. Version is independent of
the CP level and need only be
changed when this DSECT is
changed. The convention is to
increment by 1.
0000 0 Signed 2 $CHC_HDRL Header length (in bytes)
0002 2 Signed 2 $CHC_BITL Length of mapped bits (in bytes)
0004 4 Signed 4 * Reserved for future use
00000008 $CHC_HDLN *-$CHCBK Length of header (bytes)
Bit map: Contains the CHCBK flags that are subject to
relocation. These bits are defined sequentially,
regardless of how they are defined in HCPCHCBK.
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 $CHC_BITS (0) Bit map area
0008 8 Bitstring 1 $CHC0
1... .... $CHCMSM X'80' $CHCMSM CHCHFLAG
.1.. .... $CHCTIM X'40' $CHCTIM CHCHFLAG
..1. .... $CHCRWCC1 X'20' $CHCRWCC1 CHCSFLAG
...1 .... $CHCEMW X'10' $CHCEMW CHCSFLAG
.... 1... $CHCIPR X'08' $CHCIPR CHCSFLAG
00000001 $CHC_BLEN *-$CHC_BITS Length of bit map
area
Data: Contains all HCPCHCBK 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 $CHC_DATA (0) Start of data map
0009 9 Bitstring 1 $CHCKEY Key of user measurement block
000A 10 Bitstring 4 $CHCGMBOH zArch: high order MBO word
000E 14 Bitstring 4 $CHCGMBOL zArch: Low order MBO word
0012 18 Bitstring 4 $CHCIORW Pointer to chain of CRWBK's
0016 22 Bitstring 4 $CHCSALIM Set Address Limit Value
001A 26 Bitstring 4 $CHCMCV Pointer to chain of MCVBK's
001E 30 Bitstring 1 $CHCPGBY0 Non zero means CHCPGID is set
001F 31 Bitstring 11 $CHCPGID Guest Path Group ID
002A 42 Bitstring 256 $CHCCHPID Virtual chpid table
0000012A $CHC_LEN *-$CHCBK Total length, in bytes
00000026 $CHC_SZ ($CHC_LEN+7)/8 Size in
doublewords
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