Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
$PXIBK
Control Block Contents
$PXIBK DSECT
Cross Reference (Contains links to field and bit definitions)
$PXIBK Prolog
NAME : LGRPXIBK DESCRIPTION: Relocation mapping for HCPPXIBK DSECT : $PXIBK FUNCTION : LGRPXIBK describes those fields of the PXIBK 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 HCPPXIBK 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.
$PXIBK Control Block Content
$PXIBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure $PXIBK Relocation mapping for HCPPXIBK 00000001 $PXI_VER 1 Mapping version number 0000 0 Signed 2 $PXI_HDRL Header length (in bytes) 0002 2 Signed 2 $PXI_BITL Length of mapped bits (in bytes) 0004 4 Signed 2 * Reserved for future use 0006 6 Bitstring 1 $PXI_FLGS General flag byte 1... .... $PXI_SHAR X'80' $PXI_SHAR Guest using shared creation PXIBK 0007 7 Bitstring 1 * Reserved for future use 00000008 $PXI_HDLN *-$PXIBK Length of header (bytes) Bit map: Contains the PXIBK flags that are subject to relocation. These bits are defined sequentially, regardless of how they are defined in HCPPXIBK. 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 $PXI_BITS (0) Bit map area 0008 8 Bitstring 1 $PXI0 1... .... $PXICREAT X'80' $PXICREAT PXIFLAG .1.. .... $PXIWPSG X'40' $PXIWPSG PXIFLAG 00000001 $PXI_BLEN *-$PXI_BITS Length of bit map area Data: Contains all HCPPXIBK 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. 0009 9 Bitstring 1 $PXI_DATA (0) Start of data map These fields are present only when $PXI_SHAR = 0 0009 9 Bitstring 4 $PXIPSGBK -> RDO offset to PSGBK 000D 13 Bitstring 4 $PXI_PSGC PSGCOUNT from PSGBK 0011 17 Bitstring 12 $PXIUIDS All UIDs 001D 29 Bitstring 12 $PXIGIDS All GIDs 00000029 $PXI_LEN *-$PXIBK Total length, in bytes 00000006 $PXI_SZ ($PXI_LEN+7)/8 Size in doublewords
$PXIBK Storage Layout
*** $PXIBK - Relocation mapping for HCPPXIBK * * +-------------+-------------+-------------+------+------+ * 0 | $PXI_HDRL | $PXI_BITL |/////////////|(006) |//////| * +------+------+-------------+------+------+------+------+ * 8 |$PXI0 | $PXIPSGBK | $PXI_PSGC- | * +------+---------------------------+--------------------+ * 10 |-(00D)| $PXIUIDS | * +------+ +--------------------+ * 18 | | | * +----------------------------------+ | * | $PXIGIDS | * | +------------------------------------------------+ * | | 29 * +------+ * *** $PXIBK - Relocation mapping for HCPPXIBK
$PXIBK Cross Reference
Symbol Dspl Value -------------- ---- ----- $PXI_BITL 0002 $PXI_BITS 0008 $PXI_BLEN 0008 00000001 $PXI_DATA 0009 $PXI_FLGS 0006 $PXI_HDLN 0007 00000008 $PXI_HDRL 0000 $PXI_LEN 001D 00000029 $PXI_PSGC 000D $PXI_SHAR 0006 80 $PXI_SZ 001D 00000006 $PXI_VER 0000 00000001 $PXICREAT 0008 80 $PXIGIDS 001D $PXIPSGBK 0009 $PXIUIDS 0011 $PXIWPSG 0008 40 $PXI0 0008
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