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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
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