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Kernel 2.6 based: April 2004 stream
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linux-2.6.5-s390-03-april2004.tar.gz
/ MD5 ... accumulated patch, recommended (2004-05-28)
linux-2.6.5-s390-03-april2004-patches.tar.gz
/ MD5 ... per-problem-patches, recommended (2004-05-28)
These patches contain the following linux kernel bug fixes:
| Description: |
iucv: Connection lost with high network load. |
| Symptom: |
Slow or lost IUCV-connection on systems with several CPUs
active.
Sometimes strange message "iucv_send returned 00000026"
in dmesg. |
| Problem: |
Race in function grab_param(). |
| Solution: |
Re-implementation of function grab_param(). |
| Problem-ID: |
- |
| Description: |
qeth: HiperSockets performance loss compared to Linux 2.4. |
| Symptom: |
With certain workloads a performance loss compared to the
Linux 2.4 version of qeth may be experienced. |
| Problem: |
Inefficient qdio queue handling for HiperSockets. |
| Solution: |
Optimized qdio queue handling for HiperSockets. Introduced
function qeth_do_send_packet_fast as shortcut for HiperSockets.
Also added some more performance statistics to improve
performance tracking. |
| Problem-ID: |
- |
| Description: |
qeth: osasnmpd not working on Linux 2.6. |
| Symptom: |
osasnmpd does not work with 2.6 version of qeth. |
| Problem: |
snmp functionality not yet implemented on 2.6 qeth. |
| Solution: |
Added missing functions to support snmp. |
| Problem-ID: |
- |
| Note: |
The osasnmpd daemon in s390 tools 1.3.0 is not yet
enabled to run with kernel 2.6. |
| Description: |
qeth: problems when querying ARP cache with larger number of
entries. |
| Symptom: |
If a device's ARP cache contains a large number of entries,
query ARP (qetharp -nq) results in an "unknown error" and fails. |
| Problem: |
User space buffer to receive ARP entries is 20000 bytes and can
only hold 454/526 entries (for OSA/HiperSockets). |
| Solution: |
Each entry contains 32 bytes of "media specific information" which
is not used. Added an option to strip off these unused bytes before
copying to user space. This "STRIP_ENTRIES" option can be set by
the qetharp user tool. Now it is possible to receive 1666/3333
entries. |
| Problem-ID: |
- |
| Description: |
z90crypt: requests coming back from card with no caller waiting. |
| Symptom: |
"helper_receive_rc -> rc 15" in log. |
| Problem: |
Failing to schedule reader_task. |
| Solution: |
Schedule reader_task using global count. |
| Problem-ID: |
- |
| Note: |
applicable for 31-bit Linux, possibly for 64-bit Linux
(but non-reproducible) |
| Description: |
zfcp: Remove performance statistics code. |
| Symptom: |
Minor performance degradation. |
| Problem: |
The zfcp LLDD contains code that was used to collect performance
statistics but is not used anymore. |
| Solution: |
Remove unnecessary/unused code, also remove some unnecessary
includes. |
| Problem-ID: |
- |
Everybody should apply this patch.
To create the complete linux kernel sources, the following
patches need to be applied in sequence:
linux-2.6.5.tar.gz (see www.kernel.org/pub/linux/kernel/v2.6)
+ linux-2.6.5-s390-base-april2004.diff (IBM)
+ linux-2.6.5-s390-01-april2004.diff (IBM)
+ xipfs612 (see linuxvm.org/patches/index.html)
+ xipfs622 (see linuxvm.org/patches/index.html)
+ linux-2.6.5-s390-02-april2004.diff (IBM)
+ linux-2.6.5-s390-03-april2004.diff (IBM)
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