VM66677: CHANGES TO SUPPORT FUTURE STAND-ALONE DUMP UPGRADE

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• This APAR changes CP and some IPLable utilities to allocate a
  larger dump save area.
  The larger area is required for a future stand-alone dump
  program upgrade.  It is compatible with the current stand-
  alone dump program that z/VM currently ships.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of z/VM Stand-Alone Dump           *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  This APAR makes changes to CP and some IPLable utilities to
  be ready for a future stand-alone dump program upgrade.
  Future levels of the stand-alone dump program require the
  program being dumped to allocate a larger dump save area.
  

Problem conclusion

Temporary fix

• FOR RELEASE VM/ESA CP/ESA R720 :
  PREREQ: VM66173 VM66355 VM66532
  CO-REQ: NONE
  IF-REQ: NONE
  FOR RELEASE VM/ESA CP/ESA R730 :
  PREREQ: NONE
  CO-REQ: NONE
  IF-REQ: NONE
  

Comments

• This APAR makes changes to CP and some IPLable utilities to be
  ready for a future stand-alone dump program upgrade.  Future
  levels of the stand-alone dump program require the program
  being dumped to allocate a larger crashkernel area (the memory
  save area used by stand-alone dump).  The area is being
  increased from 128 MB to 255 MB.  CP allocates the area above
  2 GB if enough memory is available above 2 GB.
  
  For systems running first-level, the minimum amount of real
  memory required to IPL z/VM is increasing from 256 MB to 512 MB
  so that a crashkernel area will always be allocated on first-
  level systems.  For second-level systems, z/VM will continue
  to IPL when only 128 MB of memory is present; it just doesn't
  allocate the crashkernel area unless at least 511 MB of memory
  is present.
  
  Also, stand-alone dumpable programs SAPL (HCPSAL) and DDR
  (HCPDDR) have been changed to allocate the larger dump
  savearea.
  
  This Apar also changes the minimum amount of virtual storage
  required to run SDINST Utility to 512 MB instead of 256 MB.
  
  Documentation changes:
  
  - The text of message HCP8641E is updated to say that at least
    512 MB is required to run SDINST.
  
  - Part of the Operator Response of message HCP955W is changed
    to say "The minimum amount of real memory to IPL z/VM as a
    first-level system is 512 MB."
  
  - The Explanation of message HCP4523W was changed to say that
    CP only allocates crashkernel memory for stand-alone dump
    if there is at least 511 MB of memory in the LPAR or userid
    where it is running.  Previously at least 256 MB was
    necessary.
  - In the CP PLANNING AND ADMINISTRATION book, Chapter 21
    Table 33, on the line that says "Minimum real memory size to
    IPL z/VM as a first-level system", in columns under z/VM 7.2
    and 7.3, change 256 MB to 512 MB.
  
  - In two tables in the GENERAL INFORMATION book, changes are
    made that are similar to the one in CP PLANNING AND ADMIN
    book.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UM90301 UM90302

Modules/Macros

• HCPBOU   HCPDDR   HCPDMO   HCPIFT   HCPISG   HCPLOD   HCPMES
  HCPMESB  HCPPCC   HCPRSMBK HCPSAL   HCPSXU   HCP4523W HCP8641E
  HCP955W  SDINST
  

Fix information

• Fixed component name

  VM CP CP

• Fixed component ID

  568411202

Applicable component levels

• R720 PSY UM90301

     UP23/07/12 P 2401

• R730 PSY UM90302

     UP23/07/12 P 2302

Fix is available

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