Bug 578579

Summary:	Linux pvmmu guests (FC11, FC12, etc) crash on boot on AMD hosts with NPT disabled
Product:	Red Hat Enterprise Linux 5	Reporter:	RHEL Program Management <pm-rhel>
Component:	kvm	Assignee:	Marcelo Tosatti <mtosatti>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	high
Version:	5.5	CC:	ehabkost, lihuang, llim, michen, mjenner, mtosatti, pm-eus, sixy, tburke, virt-maint, ykaul
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kvm-83-164.el5_5.2	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	580033 (view as bug list)		Environment:
Last Closed:	2010-05-18 08:07:16 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:	574621
Bug Blocks:

Description RHEL Program Management 2010-03-31 17:28:20 UTC

This bug has been copied from bug #574621 and has been proposed
to be backported to 5.5 z-stream (EUS).

Comment 6 Miya Chen 2010-04-08 09:12:31 UTC

Tested in kvm-83-164.el5_5.2, this problem does not exist when disabled npt.
cmd:
/usr/libexec/qemu-kvm -no-hpet -rtc-td-hack -usbdevice tablet -smp 2 -m 4G -drive file=f12_32.qcow2,if=ide -net nic,vlan=0,macaddr=20:88:99:11:99:11 -net tap,vlan=0,script=/etc/qemu-ifup -uuid `uuidgen` -cpu qemu64,+sse2 -vnc :16 -monitor stdio -boot n

result:
f12_32bit guest can be installed successfully and then can boot successfully.

Comment 7 James Findley 2010-04-09 09:05:13 UTC

On my system this for some reason only affects F13 guests, not F11/F12 ones.

Marcelo Tosatti <mtosatti> provided a temporary fix that did not require any modification of the host kernel, if I get his permission I will attach the fix to this bug.

Comment 8 Miya Chen 2010-04-09 09:39:53 UTC

(In reply to comment #7)
> On my system this for some reason only affects F13 guests, not F11/F12 ones.

I can reproduce this with f12_32bit guest in my local host using kvm-83-164.el5_5.1.

Comment 12 errata-xmlrpc 2010-05-18 08:07:16 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 therefore 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/RHBA-2010-0419.html