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Bug 622021

Summary: i386/i686 kernel fails to boot on 8+ CPU "bigsmp" machines without ACPI
Product: Red Hat Enterprise Linux 5 Reporter: Tom Marshall <tdm.rhbz>
Component: kernelAssignee: Prarit Bhargava <prarit>
Status: CLOSED WONTFIX QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: low    
Version: 5.5CC: jwilson
Target Milestone: rc   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-10-17 14:35:08 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:
Attachments:
Description Flags
Fix bigsmp for non-ACPI none

Description Tom Marshall 2010-08-06 19:10:07 UTC
Created attachment 437241 [details]
Fix bigsmp for non-ACPI

Description of problem:

bigsmp is not detected in non-ACPI case.  Please find attached patch.

Comment 1 Prarit Bhargava 2010-08-24 18:56:00 UTC
(In reply to comment #0)
> Created attachment 437241 [details]
> Fix bigsmp for non-ACPI
> 
> Description of problem:
> 
> bigsmp is not detected in non-ACPI case.  Please find attached patch.

Hrmm ...

[root@amd-dinar-05 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5.5 (Tikanga)
[root@amd-dinar-05 ~]# cat /proc/cmdline 
ro root=/dev/VolGroup00/LogVol00 console=ttyS0,115200n81 noacpi pci=noacpi
[root@amd-dinar-05 ~]# dmesg | grep bigsmp
Overriding APIC driver with bigsmp
[root@amd-dinar-05 ~]# cat /proc/cpuinfo | grep processor | wc -l
24

Seems to work on my system.  What system are you using (vendor and model)?

P.

Comment 2 Tom Marshall 2010-09-20 22:44:37 UTC
The machine should not boot without the fix for bug 622018.

I don't believe noacpi is a valid kernel option.  Can you try with acpi=off instead?

Comment 3 Prarit Bhargava 2011-10-17 14:35:08 UTC
Unlikely to be fixed for RHEL5.  Closing as WONTFIX.

P.