RSAQHDR Back to Index page
 
Prolog 
Control Block Contents 
   RSAQHDR DSECT
   RSADefFRQ DSECT
   RSMANCHR DSECT
   RSAIOATD DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

 
  RSAQHDR Control Block Content Top of page
  




 RSAQHDR DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      RSAQHDR        RSM common area mapping
0000    0 Address      8 RSAQHDRFPNT    Forward pointer
0008    8 Address      8 RSAQHDRBPNT    Backward pointer
0010   16 Signed       4 RSAQHDRCNT     Count (4-byte)
     | Define a local DSECT that maps each of the               |
     | deferred frame request queues.                           |
     |                                                          |
     | For a description of the deferred frame request queues,  |
     | see the module prolog of HCPPTE.                         |
     |                                                          |
     | Notes      :  The lock and pointers for each of the three       |
     | deferred frame request queues are only addressable       |
     | via this DSECT (RSADefSP, RSADefPF and RSADefPL).        |
     | The counts are named individually so that they may       |
     | be "peeked at" without the corresponding lock            |
     | held, and collected by monitor without the lock          |
     | held.  The lock for the approprate deferred frame        |
     | request queue must be held to update the counts.         |




 RSADefFRQ DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      RSADefFRQ      RSM common area mapping
0000    0 Signed       8 RSADefSP (6)   Spin lock.
0030   48 Address      4 RSADefPF       Pointer to First CPEBK. Only
                                        valid if RSADefCT not 0. (Last
                                        task to dequeue does not modify.)
0034   52 Address      4 RSADefPL       Pointer to Last CPEBK. Only valid
                                        if RSADefCT not 0. (Last task to
                                        dequeue does not modify.)
0038   56 Signed       4 RSADefCT       Non-negative count of frame
                                        requests deferred on this frame
                                        request defer queue. Individually
                                        defined as:
003C   60 Address      4 * (0)          Force a cross reference
003C   60 Address      4 * (0)          Force a cross reference
003C   60 Address      4 * (0)          Force a cross reference
     | This section maps the three free frames anchors.         |
     | Use EXTRNs HCPRSMFR/HCPRSMSV/HCPRSMPR to locate them.    |




 RSMANCHR DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      RSMANCHR       RSM common area mapping
0000    0 Dbl-Word     8 * (0)          HCPRSMFR and HCPRSMSV are list
                                        anchors that contain the address
                                        of the first SXSTE which
                                        represents a free storage page
                                        with available space of the
                                        appropriate type to be examine
                                        when allocating or deallocating
                                        VMDBK (Guestperm), or System
                                        (Sysperm) free storage
                                        respectively. The count of SXSTEs
                                        on the list follows the anchor.
0000    0 Address      8 RSMFRCHN       Host Logical Address Anchor for
                                        SXSTE chain of free storage
                                        frames with avbl space
0008    8 Signed       8 RSMFRCNT       Count of FRMTEs on chain
       This section maps the IO Address Table (IOAT) subpool
       work area, located at RSAIOAT.
         +*********************************************----------+
      00 |RSAIOFBQ                                               |
         +*********************************************----------+
      08 |RSAIOLTH                                               |
         +*********************************************----------+
      10 |RSAIOUSD                                               |
         +*********************************************----------+
      18 |RSAIOFRE                                               |
         +*********************************************----------+
      20 |RSAIONFB                                               |
         +*********************************************----------+
      28 |RSAIOMAX                                               |
         +*********************************************----------+
      30 |RSAIOLOW                                               |
         +*********************************************----------+
      38 |RSAIOHIGH                                              |
         +***************------------+***************------------+
      40 |RSAIOSIZE (MB)             |RSAIOWRNP (%)              |
         +***************------------+***************------------+
      48 |RSAIOWARN                                              |
         +***************------------+***************------------+
      50 |RSAIOWRNC                  | RSAIOFALS                 |
         +***************------------+***************------------+
      58 |RSAIOFAIL                  | reserved                  |
         +***************------------+***************------------+
      60 |reserved                                               |
         +*********************************************----------+
      68 |RSAIOLOCK                                              |
         +*********************************************----------+
      70 |RSAIOLOCK continued                                    |
         +*********************************************----------+
      78 |RSAIOLOCK continued                                    |
         +*********************************************----------+




 RSAIOATD DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      RSAIOATD       RSM common area mapping
0000    0 Address      8 RSAIOFBQ       HAA Address of first FBQE OR ZERO
0008    8 Signed       8 RSAIOLTH       Anchor FBQE length - always 0
0010   16 Signed       8 RSAIOUSD       Number of bytes currently used
0018   24 Signed       8 RSAIOFRE       Number of bytes currently free
0020   32 Signed       8 RSAIONFB       Current number of free blocks
0028   40 Signed       8 RSAIOMAX       MAX number of bytes used
0030   48 Signed       8 RSAIOLOW       Lowest address in subpool
0038   56 Signed       8 RSAIOHIGH      Highest address in subpool
0040   64 Signed       4 RSAIOSIZE      MB size of subpool from config
0044   68 Signed       4 RSAIOWRNP      % warn from config
0048   72 Signed       8 RSAIOWARN      Warning limit from config
0050   80 Signed       4 RSAIOWRNC      Subpool warning count
0054   84 Signed       4 RSAIOFALS      Subpool fail count
0058   88 Signed       4 RSAIOFAIL      Subpool + avail list fail count
005C   92 Signed       4 * (3)          reserved
0068  104 Dbl-Word     8 RSAIOLCK (3)   PCI shadow table storage lock
          00000010       RSAIOATdw      (*-RSAIOATD+7)/8 RSAIOAT DW
                                        length
          00004000       RSAIOSTL       X'4000' Length of each getmain
          00000000       FBQADR         00,08,C'A' Address of next FBQE
                                        or zero
          00000008       FBQLTH         08,08,C'F' Length of current free
                                        area
 
 
  RSAQHDR Storage Layout Top of page
  
 
*** RSAQHDR - RSM common area mapping
*
*     +-------------------------------------------------------+
*   0 |                     RSAQHDRFPNT                       |
*     +-------------------------------------------------------+
*   8 |                     RSAQHDRBPNT                       |
*     +---------------------------+---------------------------+
*  10 |        RSAQHDRCNT         | 14
*     +---------------------------+
*
*** RSAQHDR - RSM common area mapping
 
*** RSADefFRQ - RSM common area mapping
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       RSADEFSP                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  30 |         RSADEFPF          |         RSADEFPL          |
*     +---------------------------+---------------------------+
*  38 |         RSADEFCT          | 3C
*     +---------------------------+
*
*** RSADefFRQ - RSM common area mapping
 
*** RSMANCHR - RSM common area mapping
*
*     +-------------------------------------------------------+
*   0 |                       RSMFRCHN                        |
*     +-------------------------------------------------------+
*   8 |                       RSMFRCNT                        |
*     +-------------------------------------------------------+
*  10
*
*** RSMANCHR - RSM common area mapping
 
*** RSAIOATD - RSM common area mapping
*
*     +-------------------------------------------------------+
*   0 |                       RSAIOFBQ                        |
*     +-------------------------------------------------------+
*   8 |                       RSAIOLTH                        |
*     +-------------------------------------------------------+
*  10 |                       RSAIOUSD                        |
*     +-------------------------------------------------------+
*  18 |                       RSAIOFRE                        |
*     +-------------------------------------------------------+
*  20 |                       RSAIONFB                        |
*     +-------------------------------------------------------+
*  28 |                       RSAIOMAX                        |
*     +-------------------------------------------------------+
*  30 |                       RSAIOLOW                        |
*     +-------------------------------------------------------+
*  38 |                      RSAIOHIGH                        |
*     +---------------------------+---------------------------+
*  40 |        RSAIOSIZE          |        RSAIOWRNP          |
*     +---------------------------+---------------------------+
*  48 |                      RSAIOWARN                        |
*     +---------------------------+---------------------------+
*  50 |        RSAIOWRNC          |        RSAIOFALS          |
*     +---------------------------+---------------------------+
*  58 |        RSAIOFAIL          |///////////////////////////|
*     +---------------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  68 |                                                       |
*     =                       RSAIOLCK                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  80
*
*** RSAIOATD - RSM common area mapping
 
 
  RSAQHDR Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
FBQADR         0068 00000000
FBQLTH         0068 00000008
RSADefCT       0038
RSADefPF       0030
RSADefPL       0034
RSADefSP       0000
RSAIOATdw      0068 00000010
RSAIOFAIL      0058
RSAIOFALS      0054
RSAIOFBQ       0000
RSAIOFRE       0018
RSAIOHIGH      0038
RSAIOLCK       0068
RSAIOLOW       0030
RSAIOLTH       0008
RSAIOMAX       0028
RSAIONFB       0020
RSAIOSIZE      0040
RSAIOSTL       0068 00004000
RSAIOUSD       0010
RSAIOWARN      0048
RSAIOWRNC      0050
RSAIOWRNP      0044
RSAQHDRBPNT    0008
RSAQHDRCNT     0010
RSAQHDRFPNT    0000
RSMFRCHN       0000
RSMFRCNT       0008
 
This information is based on z/VM 6.4.0 Last updated on 24 Aug 2016 at 09:43:00 EDT.
Copyright IBM Corporation, 1990, 2016