MCA Bank #6 for Intel Dunnington processor cannot be enabled in x86-64 kernel

Bug #239666 reported by Yong Wang on 2008-06-13
6
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Medium
Unassigned
Hardy
Medium
Tim Gardner
Intrepid
Medium
Unassigned

Bug Description

Current 64 bit MCE reporting code hardcodes bank limitation as 6 and this is not an issue for processors with <=6 MCE banks. But for latest processors with more than 6 MCE banks, additional MCE banks available in processor hardware cannot be enabled to record hardware error information which is extremely helpful for diagnostics.

For those who do not know what MCA & MCE are, here is some useful information:
1. http://one.firstfloor.org/~andi/mce.pdf
2. kernel-source-dir/Documentation/x86_64/machinecheck

Steve Langasek (vorlon) wrote :

Accepted into -proposed, please test and give feedback here. Please see https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Changed in linux:
status: New → Fix Committed
Tim Gardner (timg-tpi) wrote :
Changed in linux:
assignee: nobody → timg-tpi
importance: Undecided → Medium
milestone: none → ubuntu-8.04.2
Tim Gardner (timg-tpi) wrote :
Changed in linux:
status: New → Fix Committed
importance: Undecided → Medium

This is "Fix Released" for Intrepid.

Changed in linux:
status: Fix Committed → Fix Released
Martin Pitt (pitti) wrote :

linux 2.6.24-21 copied to hardy-updates.

Changed in linux:
status: Fix Committed → Fix Released
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