MCEBK Back to Index page
 
Prolog 
Control Block Contents 
   MCEBK 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.


  MCEBK Prolog Top of page
  
 NAME       : HCPMCEBK
 DESCRIPTION: Machine-Check Extended Save Area
 DSECT      : MCEBK
 FUNCTION   : Maps the Machine-Check Extended Save Area
 LOCATED BY : PF2MCESA field in PFXPG (host page 1)
              UOPMCESA field in UZPAG (guest page 1)
 CREATED BY : HCPMPSON when storage required by a processor
              is obtained.
 DELETED BY : HCPMPSOF when storage required by a processor
              is de-allocated.
 REFERENCES : None
 SERIALIZED : Guest MCEBK-
              System VMDBK Dispatch Lock
              Host MCEBK-
              Processor local or recovery processor for
              checkstopped processors.
 RELOCATION CONSIDERATIONS : None -  Guest MCEBK resides in guest
              memory so it is relocated during
              memory move.
 COMPATIBILITY AND MIGRATION CONCERNS : The format of this control block is defined
              by the z/Architecture CPU Architecture.
 
 
  MCEBK Control Block Content Top of page
  




 MCEBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      MCEBK          Machine-Check Extended Save Area
0000    0 Dbl-Word     8 MCEVRS (64)    VR0-31
0200  512 Bitstring  512 *              Reserved for IBM use
          00000400       MCEBKLEN       *-MCEBK MCEBK length
          00000080       MCEBKSIZ       (MCEBKLEN+7)/8 MCEBK size in
                                        doublewords
 
 
  MCEBK Storage Layout Top of page
  
 
*** MCEBK - Machine-Check Extended Save Area
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                        MCEVRS                         =
*     |                                                       |
*     +-------------------------------------------------------+
* 200 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 400
*
*** MCEBK - Machine-Check Extended Save Area
 
 
  MCEBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
MCEBKLEN       0200 00000400
MCEBKSIZ       0200 00000080
MCEVRS         0000
 
This information is based on z/VM 6.4.0 Last updated on 24 Aug 2016 at 09:26:35 EDT.
Copyright IBM Corporation, 1990, 2016