AFFBK
Prolog  
Control Block Contents  
   AFFBK DSECT
Storage Layout  
Cross Reference (Contains links to field and bit definitions)  

AFFBK Prolog
 Name       : HCPAFFBK
 Description: AFFinity management control BlocK
 DSECT      : AFFBK
 Function   : The AFFBK maps the storage in HCPRCC starting at
              label HCPRCCAF, extending for the length of this
              block.  When the AFFBK is copied via the 'COPY'
              psuedo-op into any module other than HCPRCC, it will
              generate a DSECT.  When copied in HCPRCC, however,
              it will generate code to actually define the fields.
              The AFFBK is used by the processor feature affinity
              management routines as an area to do bookkeeping
              and recording.
 Located by : HCPRCCAF is the address of the start of the block.
 Created by : The block is DCed in module HCPRCC.
 Deleted by : Never deleted
 Serialized : Alterations and references to the AFFBK are
              serialized by the Scheduler Lock.
 

 
 
 AFFBK Control Block Content

AFFBK DSECT
Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      AFFBK          AFFinity management control BlocK
     workarea.
0000    0 Signed       4 AFFPFTR (31)   Processor features A data area
                                        containing a fullword for each
                                        processor (indexed by PFXINDEX,
                                        or VMDHPLDV/2**5) describing the
                                        features available on each
                                        processor.
0000    0 Address      4 *              Initialize for Master
007C  124 Address      4 AFFLFEAT       Loadable features This is a mask
                                        of feature bits containing a one
                                        in the position of each feature
                                        which is "loadable". A feature
                                        which is loadable cannot be
                                        shared by VMDBKs without some
                                        work involved to accomplish the
                                        switch. This is a static mask.
          00000080       AFFLEN         *-AFFBK Length in bytes of the
                                        AFFBK
          00000010       AFFSIZE        (AFFLEN+7)/8 Size in doublewords
                                        of the AFFBK
 

 
 
 AFFBK Storage Layout
*** AFFBK - AFFinity management control BlocK
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       AFFPFTR                         =
*     |                           +---------------------------+
*  78 |                           |         AFFLFEAT          |
*     +---------------------------+---------------------------+
*  80
*
*** AFFBK - AFFinity management control BlocK
*** Overlay for AFFPFTR in AFFBK
*
*     +---------------------------+
*   0 |///////////////////////////| 4
*     +---------------------------+
*
*** Overlay for AFFPFTR in AFFBK
 

 
 
 AFFBK Cross Reference
 (contains links to field and bit definitions)
Symbol         Dspl Value
-------------- ---- -----
AFFLEN         007C 00000080
AFFLFEAT       007C
AFFPFTR        0000
AFFSIZE        007C 00000010
 



This information is
based on VM/ESA 2.4.0.
Last updated on 3 Aug 1999 at 11:38:58 EDT.

Copyright IBM Corporation, 1990, 1999