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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure $IPQBK Relocation mapping for HCPIPQBK
00000001 $IPQ_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 $IPQ_HDRL Header length (in bytes)
0002 2 Signed 2 $IPQ_BITL Length of mapped bits (in bytes)
0004 4 Signed 4 * Reserved for future use
00000008 $IPQ_HDLN *-$IPQBK Length of header (bytes)
Bit map: Contains the IPQBK flags that are subject to
relocation. These bits are defined sequentially,
regardless of how they are defined in HCPIPQBK.
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 $IPQ_BITS (0) Bit map area
0008 8 Bitstring 1 $IPQ0
1... .... $IPQRELRG X'80' $IPQRELRG IPQF0
.1.. .... $IPQABSRG X'40' $IPQABSRG IPQF0
..1. .... $IPQGSSC X'20' $IPQGSSC IPQF0
00000001 $IPQ_BLEN *-$IPQ_BITS Length of bit map
area
Data: Contains all HCPIPQBK 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 $IPQ_DATA (0) Start of data map
0009 9 Bitstring 1 $IPQRQLO Requested low range value
000A 10 Bitstring 1 $IPQRQHI Requested high range value
000B 11 Bitstring 1 $IPQEFLO Effective low range value
000C 12 Bitstring 1 $IPQEFHI Effective high range value
000D 13 Bitstring 1 $IPQQULO Queueing Calculation range LO
value
000E 14 Bitstring 1 $IPQQUHI Queueing Calculation range HI
value
000F 15 Bitstring 4 $IPQDSKIP Count of times that a DASD I/O
request was outprioritized by
another virtual machine's I/O.
Fields copied from non-IPQBK control blocks
0013 19 Bitstring 1 $IPQCPQH Source system's SYSIOPQH
0014 20 Bitstring 1 $IPQCPLO Source system's SYSIOPLO
0015 21 Bitstring 1 $IPQCPHI Source system's SYSIOPHI
00000016 $IPQ_LEN *-$IPQBK Total length, in bytes
00000003 $IPQ_SZ ($IPQ_LEN+7)/8 Size in
doublewords
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