- 03/20/2025 APAR VM66829 z/VM 7.4 CP: Feature Pack - Feature 01 Fix 00
                  MRMTRSPR
 
- 06/05/2025 APAR VM66844 z/VM 7.4 CP: Feature Pack - Feature 01 Fix 02
                  MRSYTSYG
                  MRMTRFAC
                  MRUSELOF
                  MRUSEACT
 
- 06/18/2025 APAR VM66824 z/VM 7.4 CP: Feature Pack - Feature 02 Fix 00
                  MRSYTEPM
                  MRSYTPOW
                  MRMTRSYS
                  MRMTRQDC
                  MRIODVSW
                  MRIODQDA
                  MRIODQDS
                  MRIODQDD
                  MRIODBPS
                  MRIODVSE
 
- 10/03/2025 APAR VM66877 z/VM 7.4 CP: Feature Pack - Feature 03 Fix 00
                  MRSYTEPM
                  MRIODVSW
                  MRIODBPS
 
- 02/27/2026 APAR VM66920 z/VM 7.4 CP: Fix Pack - Feature 03 Fix 05
                  MRUSEACT
                  MRIODQEQ
 
- 05/01/2026 APAR VM66891 z/VM 7.4 CP: Feature Pack - Feature 04 Fix 00
                  MRMTRMEM
                  MRSTORSG
                  MRSTOASP
                  MRSTORAS
                  MRSTORAE
 
Domain 0 Changed Records
    MRSYTSYG (D0R19)
    Fields added for APAR VM66844
      SYTSYG_SYSFACST
        SYTSYG_SYSFACB0
          SYTSYG_SYSFTXD0
          SYTSYG_SYSFTXB0
 
    MRSYTEPM (D0R20)
    Fields added for APAR VM66824
      SYTEPM_ECMCBC4_CPC
      SYTEPM_ECMCBC5_CPC
      SYTEPM_ECMCCWU4_CPC
      SYTEPM_ECMCCWU5_CPC
      SYTEPM_ECMCCWU4
      SYTEPM_ECMCCWU5
      SYTEPM_ECMCDUW4_CPC
      SYTEPM_ECMCDUW5_CPC
      SYTEPM_ECMCDUW4
      SYTEPM_ECMCDUW5
      SYTEPM_ECMCDUR4_CPC
      SYTEPM_ECMCDUR5_CPC
      SYTEPM_ECMCDUR4
      SYTEPM_ECMCDUR5
      SYTEPM_NCM_CXT4
      SYTEPM_NCM_CXT5
      SYTEPM_NCM_TIOE_XT4
      SYTEPM_NCM_TIOE_XT5
      SYTEPM_NCM_TCT_FCOP5
      SYTEPM_NCM_TCT_DFCOP5
      SYTEPM_NCM_NCM_SCT_FCOP5
      SYTEPM_NCM_TCT_FCTMOP
      SYTEPM_NCM_TCT_DFCTMOP
      SYTEPM_NCM_SCT_FCTMOP
      SYTEPM_CSCCMCMB4
      SYTEPM_CSCCMCMB5
      SYTEPM_CSCCMCMC4
      SYTEPM_CSCCMCMC5
      SYTEPM_CSCCMCMW4
      SYTEPM_CSCCMCMW5
      SYTEPM_CSCCMCMR4
      SYTEPM_CSCCMCMR5
      SYTEPM_CSCCMCIE4
      SYTEPM_CSCCMCIE5
      SYTEPM_CSCCMCMU4
      SYTEPM_CSCCMCMU5
    Structure of record layout changed for APAR VM66877
      * Note: Field offsets did not change
    Field added for APAR VM66877
      SYTEPM_CSCIOENUM
 
    MRSYTPOW (D0R25)
    New record for APAR VM66824
      Power Consumption Data
 
Domain 1 Changed Records
    MRMTRSYS (D1R4)
    Fields added for APAR VM66824
      MTRSYS_STSI111_PT2
      MTRSYS_POWIBM6
      MTRSYS_SYSFACST
        MTRSYS_SYSFACB0
          MTRSYS_SYSFTXD0
          MTRSYS_SYSFTXB0
 
    MRMTRMEM (D1R7)
    Fields added for APAR VM66891
      MTRMEM_SALDRAPR
        MTRMEM_SALDARPRsvPend
        MTRMEM_SALDARPROff
 
    MRMTRSPR (D1R9)
    New fields added for VM66829:
      MTRSPR_SIDOMAINS
      MTRSPR_MS_LIMIT
 
    MRMTRQDC (D1R19)
    Fields added for APAR VM66824
    Comment changes:
      MTRQDC_QDIOFMT
      MTRQDC_RDEVOSAS
    New fields:
      MTRQDC_QSBEECVM
      MTRQDC_QSBESCVM
      MTRQDC_QSBESTAI
      MTRQDC_RDEVHECP
      MTRQDC_RDEVHSCP
      MTRQDC_RDEVHSTA
      MTRQDC_RDEVFISC
      MTRQDC_RDEVIGC
 
    MRMTRFAC (D1R37)
    New record for APAR VM66844
      Facility Alteration Event
 
Domain 3 Changed Records
    MRSTORSG (D3R1)
    Fields added for APAR VM66891
      STORSG_SALDRAPR
       STORSG_SALDARPRsvPend
       STORSG_SALDARPROff
      STORSG_APDVisited
      STORSG_APDRecoveredSlots
      STORSG_APDReadIn
      STORSG_APDASDVisited
 
    MRSTOASP (D3R4)
    Fields added for APAR VM66891
      STOASP_VEXAPDNum
      STOASP_VEXAPDStartTime
      STOASP_VEXAPDRecoveredSlots
      STOASP_VEXAPDReadIn
      STOASP_RDEVDRAA
 
    MRSTORAS (D3R26)
    New record added for APAR VM66891
      Real Device Active Drain Started
 
    MRSTORAE (D3R27)
    New record added for APAR VM66891
      Real Device Active Drain Ended
 
Domain 4 Changed Records
    MRUSELOF (D4R2)
    Fields added for APAR VM66844
      USELOF_CALFACEN
        USELOF_CALTXEN
        USELOF_CALCTXEN
    Fields added for APAR VM66824
      USELOF_VMA_SIGA
      USELOF_VMA_EQBS
      USELOF_VMA_SQBS
      USELOF_VMA_EB69
      USELOF_VMAPFCR
      USELOF_VMA_ECPQC
      USELOF_VMA_SCPQC
      USELOF_VMA_STAI
 
    MRUSEACT (D4R3)
    Fields added for APAR VM66844
      USEACT_CALFACEN
        USEACT_CALTXEN
        USEACT_CALCTXEN
    Fields added for APAR VM66824
      USEACT_VMA_SIGA
      USEACT_VMA_EQBS
      USEACT_VMA_SQBS
      USEACT_VMA_EB69
      USEACT_VMAPFCR
      USEACT_VMA_ECPQC
      USEACT_VMA_SCPQC
      USEACT_VMA_STAI
     Corrected offsets for APAR VM66920
      USEACT_VMA_ECPQC
      USEACT_VMA_SCPQC
      USEACT_STAI
      USEACT_VMAPFCR
 
Domain 6 Changed Records
 
    MRIODVSW (D6R21)
    Field deprecated for APAR VM66824
      IODVSW_LANFSV
    Fields added for APAR VM66824
      IODVSW_LANQSTLO
      IODVSW_LANQSTHI
      IODVSW_LANQSTGC
    Corrected record length for APAR VM66877
 
    MRIODQDA (D6R25)
    Comment changes for APAR VM66824
      IODQDA_QDIOFMT
      IODQDA_RDEVOSAS
 
    MRIODQDS (D6R26)
    Fields added for APAR VM66824
      IODQDS_QSBEECVM
      IODQDS_QSBESCVM
      IODQDS_QSBESTAI
      IODQDS_RDEVHECP
      IODQDS_RDEVHSCP
      IODQDS_RDEVHSTA
      IODQDS_RDEVFISC
      IODQDS_RDEVIGC
 
    MRIODQDD (D6R27)
    Fields added for APAR VM66824
      IODQDD_QSBEECVM
      IODQDD_QSBESCVM
      IODQDD_QSBESTAI
      IODQDD_RDEVHECP
      IODQDD_RDEVHSCP
      IODQDD_RDEVHSTA
      IODQDD_RDEVFISC
      IODQDD_RDEVIGC
 
    MRIODBPS (D6R35)
    Field deprecated for APAR VM66824
      IODBPS_LANFSV
    Fields added for APAR VM66824
      IODBPS_LANQSTLO
      IODBPS_LANQSTHI
      IODBPS_LANQSTGC
    Corrected record length for APAR VM66877
 
    MRIODVSE (D6R54)
    New record for APAR VM66824
      Virtual Switch EQDIO Queues
 
    MRIODQEQ (D6R55)
    New record for APAR VM66920
      Host EQDIO Queue-based data
 

This information is
based on z/VM V7R4.0.

Last updated on 1 May 2026 at 14:42:00.

Copyright IBM Corporation, 1990, 2026