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VM65987: NEW FUNCTION : GUEST SUPPORT FOR THE GUARDED-STORAGE FACILITY

A fix is available

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APAR status

  • Closed as new function.

Error description

  • z/VM support for the guarded-storage facility
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users running on an IBM Z14              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION: APPLY PTF                                    *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

  • This APAR provides guest support for the guarded-storage
    facility that was introduced with the IBM z14 (D/T3906).
    This facility is designed to improve the performance of
    garbage-collection processing by various languages, in
    particular Java.
    
    The guarded-storage facility is a hardware feature aimed at
    reducing pause times in systems with automated memory
    management, for example a Java virtual machine's garbage
    collector.  Pause times are phases during which application
    execution is suspended so as to avoid potential data
    integrity issues, and can have an impact on an application's
    response time and service level agreement requirements.
    

APAR Information

  • APAR number

    VM65987

  • Reported component name

    VM CP

  • Reported component ID

    568411202

  • Reported release

    640

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    YesSpecatt / New Function / Xsystem

  • Submitted date

    2017-02-06

  • Closed date

    2017-12-04

  • Last modified date

    2018-12-14

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

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

    UM35254

Modules/Macros

  • CBITABLE CPLOAD   HCPARD   HCPCBI   HCPCPT   HCPCPU   HCPEQUAT
    HCPGMC   HCPGMCRT HCPGSP   HCPMCEBK HCPMCH   HCPMCI   HCPMCV
    HCPMCVBK HCPMDLAT HCPMPS   HCPOM1   HCPPFXPG HCPPRV   HCPRFC
    HCPRLG   HCPRLP   HCPRST   HCPSDN   HCPSDNX  HCPSI2GB HCPSXLBK
    HCPVMDBK HCPVMN   HCPWSI   HCPWVS   LGRSDNX  LGRVMDBK
    

Fix information

  • Fixed component name

    VM CP

  • Fixed component ID

    568411202

Applicable component levels

  • R640 PSY UM35254

       UP17/12/11 P 1802  

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



Document information

More support for: z/VM family

Software version: 640

Operating system(s): z/VM

Reference #: VM65987

Modified date: 14 December 2018