Bug 177719

Summary: BIOS bug shows the wrong number of CPUs
Product: Red Hat Enterprise Linux 4 Reporter: Bastien Nocera <bnocera>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0   
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHSA-2006-0132 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-03-07 21:16:39 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: 168429    
Attachments:
Description Flags
kernel-2.6-siblings-mismatch.patch none

Description Bastien Nocera 2006-01-13 09:56:41 UTC 
kernel-2.6.9-22.0.1.EL

A BIOS bug on x346 machines shows HT siblings even though hyper-threading is
disabled.

Work-around patch is attached, and already upstream:
http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=49f384b82b03416dd7e4fc77847a959fe3247362;hp=b60c1f6ffd88850079ae419aa933ab0eddbd5535
Comment 1 Bastien Nocera 2006-01-13 09:56:42 UTC 
Created attachment 123154 [details]
kernel-2.6-siblings-mismatch.patch
Comment 2 Jason Baron 2006-01-13 16:09:10 UTC 

*** This bug has been marked as a duplicate of 169472 ***
Comment 4 Red Hat Bugzilla 2006-03-07 21:16:39 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-2006-0132.html