Bug 461879

Summary: " Kernel panic pci_map_single high address but no IOMMU"
Product: Red Hat Enterprise Linux 3 Reporter: forumlaxman
Component: kernelAssignee: Don Howard <dhoward>
Status: CLOSED WONTFIX QA Contact: Martin Jenner <mjenner>
Severity: high Docs Contact:
Priority: medium    
Version: 3.8CC: kumar.sanjaya
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2009-12-03 22:58:42 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:

Description forumlaxman 2008-09-11 05:47:54 UTC
Hi all,

 
 I have installed RHEL 3 update 8 in Sunfire X2200.

 Hardware Specifications:  Memory : 32GB 
                           AMD64 Quad core.


  The problem is  the machine is not booting up. It displays following error while booting

 " Kernel panic pci_map_single  high address but no IOMMU" 


 I have resolved this problem by giving kernel option " mem=4g " If Iam giving more than 4gb, its giving above problem. I want to use total 32 GB of memory.
how it is possible...Pls help me//

Comment 1 John Dennis 2008-09-11 13:48:24 UTC
Changed the component to kernel from imap, changed the assigned owner.

Comment 2 sanjaya 2008-09-17 08:52:47 UTC
Hi John,

imap is respect to mail server. But Could it possible change /proc file system regarding the above..

If possible what are the parameter to be changed.

Please help us....


Thanks,

Comment 3 Don Howard 2009-12-03 22:58:42 UTC
Please review bz 160799, and 504187.