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MF65181 - LIC Spectre and Meltdown speculation barrier functions

PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

LIC Spectre and Meltdown speculation barrier functions


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
TR   5770999  710  MF99011   00/00    0000
PRE  5770999  710  MF65231   00/00    0000
PRE  5770999  710  MF64599   00/00    0000
PRE  5770999  710  MF64553   00/00    0000
CO   5770999  710  MF64603   00/00    0000
CO   5770999  710  MF64604   00/00    0000
CO   5770999  710  MF48115   00/00    0000
CO   5770999  710  MF48131   00/00    0000



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
IBM has released this PTF in response to CVE-2017-5753,
CVE-2017-5715, CVE-2017-5754, and CVE-2018-3639.

CORRECTION FOR APAR MA47093 :
-----------------------------
The Licensed Internal Code will be updated to support customer
callable functions that can be used to help mitigate
Spectre/Meltdown vulnerabilities.  The new functions can be
called using the SYNCSTG machine interface instruction and
provide barriers against hardware speculation.  If a program
that uses any of these new capabilities is moved to a different
system, the target system must include all the latest
Spectre/Meltdown PTFs and firmware patches.  Failure to do so
may result in one of the following:

1. Failure to provide any machine speculation protection.

2. Failure to provide an application barrier.

3. MSGMCH6801, type=1, may be generated when the program runs.

4. MSGMCH4245, reason code 3, or MSGMCH4227, reason code 7, may
be generated when the program is created or converted.

5. MSGCPF3888 may be generated if a program is restored and
program conversion is needed.

See the IBM i Security Bulletin for a list of all previously
released PTFs and firmware patches needed to mitigate
Spectre/Meltdown vulnerabilities:

www.ibm.com/support/docview.wss?uid=nas8N1022433

CIRCUMVENTION FOR APAR MA47093 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF65021      LIC-UNPRED unexpected results tracing PEX with *CPUSWT
   MF64992      LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
   MF64699      LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
   MF64602      LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
   MF64571      LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
   MF48114      LIC-DB-OTHER-INCORROUT QUANTIZE RETURNS WRONG RESULTS
   MF62318      LIC-OTHER FIX LINKAGE AND PROGRAM MISMATCH EXPOSURE
   MF60749      LIC-PERFM PROC FOLDING NODE ID ASSOC INCORRECT
   MF60704      LIC-PERFM PROC UTIL INST IMPAIR SYSTEM RESPONSE TIME
   MF60277      LIC-PERFM TRACE EXTERNAL INTERRUPT QUEUE LATENCY
   MF58819      LIC-PERFM INSTRUMENT EXTERNAL INTERRUPT QUEUEING LATENCY

Summary Information

System.............................. i
Models..............................
Release............................. V7R1M0
Licensed Program............... 5770999
APAR Fixed.......................... MA47093
Superseded by:......................
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... NONE


System i Support

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Document information

More support for: i family

Software version: V7R1M0

Operating system(s): OS/400

Reference #: MF65181

Modified date: 12 September 2018