Forwarded message from "Scott G." on Fri, 10 Dec 2004 18:21:50 UTC Posted
on: comp.os.os2.bugs

Put up new kernels. Not too much new. Backed out an os2ldr/os2dump change.
Left in the change that leaves out Pentium Pros (sorry to those folks).
Left in some changes to help some P4 systems boot properly.

-Scott

---END FORWARDED MESSAGE---

*** Warning *** Do NOT use these kernels on Pentium Pro systems.

[Moderator note: As always these are not officially supported by IBM unless they tell you to use them.

Download from ftp://testcase.boulder.ibm.com/ps/fromibm/os2/

**** Please send any followup to comp.os.os2.bugs on usenet. ****

Also note that files are only on IBM's testcase for 2-3 days, so if you want to try these get them now. Make certain you back up any files replaced and don't try these on a production system. Read any readme file before applying any changes. If your system is working well, and you have no problems addressed by these updates, do yourself a favour and don't mess with this. You have been warned.

The UNI and SMP files are for WSeB/ACP/eCS Pro (SMP kernel) and the W4 files are for post FP15/MCP versions, including eComStation. Only use the SMP kernel on a machine with more then one CPU.]

>From the readme file:

20041105 14.100e
****** WARNING: Do NOT use this version on a Pentium Pro machine.
For the benefit of everyone else, I have temporarily removed a workaround for a P-Pro chip bug. This will improve performance under heavy load by a few percent for all other machines by correctly aligning the IDT entry.

JR20486 More sys3175 during bootup on Pentium 4s (and maybe Opterons?) with >512mb of RAM

- changedd vmco_s to be 8 bytes instead of 5. This will break tools that depended on that length and will use an extra 184kb of resident memory. However, it greatly speeds up some memory management operations.

20041210 14.100g
****** SEE WARNING UNDER 20041105

JR20486 (again): Even more P4-related changes. Athlon64 likely still not working reliably (or supported).
- os2dump and os2ldr LBA changes in 20041105 backed out
- *Very* small timing hole caused trap 3 in SwitchNPX

Source: OS2VOICE

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