Here is what I received from SuSE support. For k_timer and the OCO's in k_deflt
_____________________________________________________________________________________________ Title: Recommended update for KERNEL (k_timer) http://sdb.suse.de/en/psdb/html/ffa636bf8a54633eab21a2807d3a5364.html _______________________________________________________ Applies to Product(s): SuSE Linux Enterprise Server 7 for S/390 and zSeries Package: k_timer Release: 20020502 Obsoletes: none Indications This kernel should be installed if you are running many systems in VM/ESA. Contraindications None. Problem description This update includes IBM patches up to code drop 2002-04-15 (linux-2.4.7-s390-7.tar.gz) as well as some SuSE patches. It fixes the following problems: * Hanging processes while simultaneous DASD and network I/O. The flag for a disk I/O interrupt accidentally gets reset under certain circumstances, leaving the process accessing the disk waiting for a finished I/O transfer. * /proc/dasd/devices reports wrong read-only/read-write status for devices that have been modified with the BLKROSET I/O control. * System crash in DASD device start because of the bottom half called too early with a request on the block device queue which requeues it to the internal DASD queue even though the device isn't completely initialized yet. * DASD devices that are addressed with the DIAG discipline do not work. * The IUCV interface does not work after a reboot due to faulty shutdown. The CPU that has brought up the interface must shut it down, which wasn't guaranteed. * Late machine check handling because of not setting the check enable bit in the PSW. * System either loops or ends with disabled wait when trying to reboot. * Device inaccessible after CHPID offline/online cycle. * Possible Kernel Oops when writing to /proc/cio_ignore due to off-by-one error in calculation of buffer size. * The security fix to prevent a symbolic link DoS reduced the maximum symlink depth from 8 to 5, breaking applications like DB2 that rely on deep linking. The reduction is unnecessary to avoid the DoS. Enhancements: * Provides dummy network device as a module. * New kernel RPM k_timer which includes the timer patch to reduce load on sites with many linux systems running under VM/ESA. The patch changes the fixed 100 Hz timer interrupt to on-demand timer interrupts. Additional updates: * IBM OCO Drop 2002-03-01 for HiperSocket support. This is available on z/VM 4.2 only and requires the application of the PTFs for the following APARs: VM62938 and VM63034. Please check the VM service information for the the latest available updates: VM Info-APAR II12444 contains useful information for using Linux under VM. Solution Please install the updates provided at the location noted below. Installation notes This update is provided as an RPM package that can easily be installed onto a running system by using these commands: rpm -Uvh --force k_timer.rpm zipl Now shut down the Linux system with: shutdown -h now (substitute 'now' with an appropriate amount of time if you want to give local users a chance to log out before the Linux system goes down, for example '+10' for 10 minutes.) After the system has been shut down, re-IPL. _______________________________________________________ Please use the following links to download the packages: SuSE Linux Enterprise Server 7 for S/390 and zSeries (s390): http://sdb.suse.de/download/s390/update/SuSE-SLES/7/rpm/k_timer-20020502.rpm SuSE Linux Enterprise Server 7 for S/390 and zSeries (s390) (most recent package): http://sdb.suse.de/download/s390/update/SuSE-SLES/7/rpm/k_timer.rpm ________________________________________________________________________________________________________ Title: Recommended update for KERNEL (k_deflt) http://sdb.suse.de/en/psdb/html/fce728ea8497972e14a574eca01eb382.html Applies to Product(s): SuSE Linux Enterprise Server 7 for S/390 and zSeries Package: k_deflt Release: 20020502 Obsoletes: none Indications This update should be installed Contraindications None. Problem description This update includes IBM patches up to code drop 2002-04-15 (linux-2.4.7-s390-7.tar.gz) as well as some SuSE patches. It fixes the following problems: * Hanging processes while simultaneous DASD and network I/O. The flag for a disk I/O interrupt accidentally gets reset under certain circumstances, leaving the process accessing the disk waiting for a finished I/O transfer. * /proc/dasd/devices reports wrong read-only/read-write status for devices that have been modified with the BLKROSET I/O control. * System crash in DASD device start because of the bottom half called too early with a request on the block device queue which requeues it to the internal DASD queue even though the device isn't completely initialized yet. * DASD devices that are addressed with the DIAG discipline do not work. * The IUCV interface does not work after a reboot due to faulty shutdown. The CPU that has brought up the interface must shut it down, which wasn't guaranteed. * Late machine check handling because of not setting the check enable bit in the PSW. * System either loops or ends with disabled wait when trying to reboot. * Device inaccessible after CHPID offline/online cycle. * Possible Kernel Oops when writing to /proc/cio_ignore due to off-by-one error in calculation of buffer size. * The security fix to prevent a symbolic link DoS reduced the maximum symlink depth from 8 to 5, breaking applications like DB2 that rely on deep linking. The reduction is unnecessary to avoid the DoS. Enhancements: * Provides dummy network device as a module. Additional updates: * IBM OCO Drop 2002-03-01 for HiperSocket support. This is available on z/VM 4.2 only and requires the application of the PTFs for the following APARs: VM62938 and VM63034. Please check the VM service information for the the latest available updates: VM Info-APAR II12444 contains useful information for using Linux under VM. Solution Please install the updates provided at the location noted below. Installation notes This update is provided as an RPM package that can easily be installed onto a running system by using these commands: rpm -Uvh k_deflt.rpm zipl Now shut down the Linux system with: shutdown -h now (substitute 'now' with an appropriate amount of time if you want to give local users a chance to log out before the Linux system goes down, for example '+10' for 10 minutes.) After the system has been shut down, re-IPL. _______________________________________________________ Please use the following links to download the packages: SuSE Linux Enterprise Server 7 for S/390 and zSeries (s390): http://sdb.suse.de/download/s390/update/SuSE-SLES/7/rpm/k_deflt-20020502.rpm SuSE Linux Enterprise Server 7 for S/390 and zSeries (s390) (most recent package): http://sdb.suse.de/download/s390/update/SuSE-SLES/7/rpm/k_deflt.rpm James McPhillips System Programmer Computer Associates,inc. 1 Computer Associates Plaza, Islandia, NY. 11749 mcphillips,[EMAIL PROTECTED] 1 631 342 3171 -----Original Message----- From: Wolfe, Gordon W [mailto:[EMAIL PROTECTED]] Sent: Friday, May 17, 2002 12:24 PM To: [EMAIL PROTECTED] Subject: Re: Timer Patch Are you saying that SuSE provides rpms that install the timer patch and OCOs into the kernel? I have a support contract with SuSE so I should be able to get them from their site. Where did you get them from? I can't find them. "You do not need a parachute to skydive. You only need a parachute to skydive twice." -Motto of the Darwin Society Gordon W. Wolfe, Ph.D. (425) 865-5940 VM Technical Services, The Boeing Company > ---------- > From: Mcphillips, James > Reply To: Linux on 390 Port > Sent: Thursday, May 16, 2002 2:07 PM > To: [EMAIL PROTECTED] > Subject: Re: Timer Patch > > This is where distributors make their money. I spent a week configuring > and recompiling theSLES7 kernel to include NO-100Hz-Support, only to find > that the OCO's supplied by IBM don't support SMP. IBM instructed me to > get the RPM's from SuSE. > They installed in about 2 minutes. > > > Linux-2-4.7-timer-4 is the one you want as well as all prerequisite > patches > The order should be: > * linux-2.4.7.tar.gz (original kernel source) > + linux-2.4.7-s390.diff (IBM) > + linux-2.4.7-s390-1.diff (IBM) > + linux-2.4.7-s390-2.diff (IBM) > + linux-2.4.7-s390-3.diff (IBM) > + linux-2.4.7-s390-4.diff (IBM) > + linux-2.4.7-s390-5.diff (IBM) > + linux-2.4.7-s390-6-lcs.diff (IBM) > + linux-2.4.7-s390-7.diff (IBM) > + linux-2.4.7-timer-4.diff (IBM) > > As well as recommended OCO modules dated 2002/30/01 > > I have the RPM's if you'd like, and don't believe there are any issues as > far as redistributing them. > There are 2, one is for timer patch the other is the OCO's. > > > James McPhillips > System Programmer > Computer Associates,inc. > > ticed that there are several releases of the timer patch at > http://www10.software.ibm.com/developerworks/opensource/linux390/current2_ > 4_7.shtml > > Given that I'm running the SLES 7 2.4.7 level kernel which one do I want, > or does it matter? > > thx > -------------------------------------------------------------------- > Lionel B. Dyck, Systems Software Lead > Kaiser Permanente Information Technology > 25 N. Via Monte Ave > Walnut Creek, Ca 94598 > > Phone: (925) 926-5332 (tie line 8/473-5332) > E-Mail: [EMAIL PROTECTED] > Sametime: (use Lotus Notes address) > AIM: lbdyck > >
