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Bug 462031

Summary: Fail to install RHEL5.1/5.2 x86 with 128G DIMMs
Product: Red Hat Enterprise Linux 5 Reporter: Robin Luo <luo.zi-gui>
Component: kernelAssignee: Red Hat Kernel Manager <kernel-mgr>
Status: CLOSED CURRENTRELEASE QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: high Docs Contact:
Priority: medium    
Version: 5.4CC: jcm
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: 2009-04-23 21:40:08 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
Error message for 128G DIMM. none

Description Robin Luo 2008-09-12 03:32:42 UTC 
Description of problem:
Fail to install RHEL5.1/5.2 x86 with 128G DIMMs

Version-Release number of selected component (if applicable):
RHEL5.1,RHEL5.2 x86

How reproducible:
Install RHEL5.1 or RHEL5.2 x86 with 8G Memory *16=128G,after the OS installation,When completing the first installation part of RHEL 5.1 32bit, RHEL5.2 32bit and click the [reboot] button, after rebooting to finish the remain installation, then the information "unknown interrupt or fault at EIP 00000060......." [refer to the attachment]will appear on the whole screen, however the information will wait for about 30 seconds then reboot automatically and the same problem appear again and again.

But we do NOT meet this issue under RHEL5.2 x86_64.

Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:
Comment 1 Robin Luo 2008-09-12 03:38:49 UTC 
Created attachment 316516 [details]
Error message for 128G DIMM.
Comment 2 Jon Masters 2008-11-11 15:32:40 UTC 
Hi,

Thanks for the bug report...however...

Please can you let me/us know, why do you think this is a bug in microcode_ctl? This looks a lot more like a generic kernel bug, so I am going to re-assign to the "kernel" package.
Comment 3 Linda Wang 2009-04-23 21:40:08 UTC 
(1) with RHEL5 on x86; if you install on
    a system that is >4G of memory, you need to use
    the *PAE* kernels:
    e.g.
    kernel-PAE-2.6.18-???.el5.i686.rpm

    where ??? is the kernel version number.

(2) with RHEL5.3's PAE kernel, we have limited the
    max memory to 64G to avoid >64G issue on x86. 
    See RHEL5.3, -120.el5, changelog:

    Mon Oct 27 2008 Don Zickus  [2.6.18-121.el5]
    <snip..>
    - [x86] PAE: limit RAM to 64GB/PAE36 (Larry Woodman ) [465373]
    <snip..>


Hope this helps.