Bug 730221

Summary: Windows i386 guests with multiple vcpus BSOD during rebooting on AMD hosts
Product: Red Hat Enterprise Linux 5 Reporter: Qixiang Wan <qwan>
Component: kernel-xenAssignee: Xen Maintainance List <xen-maint>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: high Docs Contact:
Priority: high    
Version: 5.6CC: leiwang, mrezanin, pbonzini, xen-maint
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-08-23 11:57:21 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
Windows XP BSOD
none
Dom 2 BSOD while rebooting
none
qemu-dm log none

Description Qixiang Wan 2011-08-12 08:15:26 UTC 
Description of problem:
Windows i386 guests with multiple vcpus will BSOD on AMD i386 hosts, We saw the BSOD when it reboot after installation complete, and can reproduce it by reboot the guest with 2 vcpus.

On AMD x86_64 hosts, the guest may keep hanging there while rebooting.

No issue found on Intel hosts.
Single vcpu guest works well on AMD hosts.

Version-Release number of selected component (if applicable):
kernel-xen-2.6.18-238.21.1.el5

How reproducible:
100%

Steps to Reproduce:
1. install a windows i386 guest with 2vcpus on AMD i386 host, or reboot a pre-installed guest.
  
Actual results:
BSOD on i386 hosts
Hang on x86_64 hosts

Expected results:
Guest should work well


Additional info:
[1] it may be the same issue with 
https://bugzilla.redhat.com/show_bug.cgi?id=723854

I can reproduce the BSOD with
Comment 1 Qixiang Wan 2011-08-12 08:16:44 UTC 
> I can reproduce the BSOD with
sorry, lost the version: kernel-xen-2.6.18-278.el5
Comment 2 Qixiang Wan 2011-08-12 08:17:54 UTC 
Created attachment 517984 [details]
Windows XP BSOD
Comment 3 Qixiang Wan 2011-08-12 08:51:26 UTC 
Created attachment 517989 [details]
Dom 2 BSOD while rebooting
Comment 4 Qixiang Wan 2011-08-12 08:52:00 UTC 
Created attachment 517990 [details]
qemu-dm log
Comment 6 RHEL Program Management 2011-08-12 16:29:50 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 8 Paolo Bonzini 2011-08-23 11:57:21 UTC 

*** This bug has been marked as a duplicate of bug 720936 ***