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Bug 192098

Summary: Fix problems with MSI-X on 64-bit platforms
Product: Red Hat Enterprise Linux 4 Reporter: Bastien Nocera <bnocera>
Component: kernelAssignee: Bastien Nocera <bnocera>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: akeshava, grgustaf, jbaron, lwang, peterm
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHSA-2006-0575 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-08-10 23:20:23 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 181409    
Attachments:
Description Flags
diff-2.6.16-rc3_msi_phys_addr-01 none

Description Bastien Nocera 2006-05-17 15:48:40 UTC 
kernel-2.6.9-34.EL

From the upstream patch:
http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a0454b40ee8fac03194bb71f01730266506e75e1

"Symptom will either be memory corruption or MCA."

This is needed on some 64-bit machines from HP, ia64 machines in particular.
Comment 1 Bastien Nocera 2006-05-17 15:48:42 UTC 
Created attachment 129333 [details]
diff-2.6.16-rc3_msi_phys_addr-01
Comment 6 Ronald Pacheco 2006-05-25 16:59:24 UTC 
HP is reporting data (memory) corruption on two Montecito platforms they plan to
launch just after U4 in early August.  

Per the developer of the patch (Grant Grundler), the patch is approved upstream
and considered necessary by both the maimtainer (Greg Kroah-Hartman) and the
maintainer for Infiniband (which was our primary concern).  This patch only
affects platforms with 64-bit firmware and is required for all PCI-X and PCI-e
devices.
Comment 12 Jason Baron 2006-06-23 18:15:34 UTC 
committed in stream U4 build 39.2. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/
Comment 16 Red Hat Bugzilla 2006-08-10 23:20:23 UTC 
An advisory 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.

http://rhn.redhat.com/errata/RHSA-2006-0575.html