Bug 654550

Summary: Kernel panic when rhel3.9 64bit guest is booting up with 4G mem on AMD host.
Product: Red Hat Enterprise Linux 5 Reporter: Golita Yue <gyue>
Component: kvmAssignee: Gleb Natapov <gleb>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: high    
Version: 5.6CC: bcao, jialiu, knoel, michen, mkenneth, virt-maint, ykaul
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 638489 Environment:
Last Closed: 2010-12-15 05:15:18 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 638489    
Bug Blocks: 580948    
Attachments:
Description Flags
boot-log_guest none

Comment 1 Golita Yue 2010-11-18 03:38:31 EST 
Description of problem:
Install a rhel3u9 64bit guest on AMD host, when the guest is booting up, the
following is reported:
hda: lost interrupt
hda: lost interrupt
......
Kernel panic: pci_map_single: high address but no IOMMU.

Version-Release number of selected component (if applicable):
kvm-83-207.el5
kernel-2.6.18-231.el5

How reproducible:
Always

Steps to Reproduce:
1. Install a RHEL3U9 x86_64 guest on AMD host 
2. After installation is finished, the guest will reboot, check the boot up
process.

Actual results:
Kernel panic: pci_map_single: high address but no IOMMU.
Attached the boot-log-guest 

cmd:
/usr/libexec/qemu-kvm -m 4G -smp 1 -name r3.9-64-1 -uuid `uuidgen` -serial stdio -boot c -drive file=/mnt/r3.9-64.raw,boot=on,format=raw,cache=none,if=ide,werror=stop -net nic,macaddr=00:52:00:23:b5:50,model=rtl8139,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -no-hpet -no-kvm-pit-reinjection -usbdevice tablet -rtc-td-hack -startdate now -cpu qemu64 -M rhel5.6.0 -notify all -vnc :1

Expected results:
The guest is booted up smoothly.

Additional info:
when vmem=2G  PASS
Comment 2 Golita Yue 2010-11-18 03:39:29 EST 
Created attachment 461240 [details]
boot-log_guest
Comment 3 Gleb Natapov 2010-12-15 05:15:18 EST 
Please search bugzilla for similar issues before opening new bugs.

*** This bug has been marked as a duplicate of bug 523628 ***