Red Hat Bugzilla – Bug 128585
kernel has problem initializing NUMA on a TYAN K8W
Last modified: 2013-08-05 21:07:01 EDT
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Description of problem:
Tyan K8W system, 4GB memory, BIOS v2.02
RHEL 3 U2, kernel version 2.4.21-15.0.3.ELsmp
SRAT/NUMA is setup in the BIOS, but RHEL is unable to setup NUMA when
the kernel. I've attached the messages file to help. See these lines:
Jul 8 13:24:31 testpig3 kernel: kernel direct mapping tables upto
10280000000 @ 8000-13000
Jul 8 13:24:31 testpig3 kernel: Scanning NUMA topology in Northbridge 24
Jul 8 13:24:31 testpig3 kernel: Node 0 MemBase 0000000000000000 Limit
Jul 8 13:24:31 testpig3 kernel: Node 1 MemBase 0000000180000000 Limit
Jul 8 13:24:31 testpig3 kernel: Node map not sorted 180000000,0
Jul 8 13:24:31 testpig3 kernel: No NUMA configuration found
Jul 8 13:24:31 testpig3 kernel: Faking a node at
I have tried numa=on at the boot prompt as a kernel option, but that
doesnt make a difference, since NUMA is running, it just seems like
its having a problem sorting.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Bootup the computer
Actual Results: It boots up normally, but you get this nice message
Expected Results: It should say that it found a NUMA configuration
and it initialized normally.
This looks suspiciously like another issue I've seen; will investigate.
I checked, and this should be fixed in Update 3. The node-detection
code has been modified to better identify and skip nonexistent node
Ok, is there a package in the beta channel that I can hand the
customer until the next release, or is it in the kernel package. If
its in the kernel package I'll just tell him to wait till next release.
It's a kernel fix. Grab the kernel from the beta channel and give it
Jim closed this as being fixed in "next release", which would
normally refer to RHEL4. But the bug is actually being fixed
in RHEL3 Update 3, and it was tracked in bugzilla #121708.
So I'm (re)closing this as a dup of the older bug. -ernie
*** This bug has been marked as a duplicate of 121708 ***
An errata has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.