Bug 1029352

Summary: windows 2008 R2 guest BSOD with '-no-kvm'
Product: Red Hat Enterprise Linux 7 Reporter: Xu Han <xuhan>
Component: qemu-kvmAssignee: Hai Huang <hhuang>
Status: CLOSED WONTFIX QA Contact: Virtualization Bugs <virt-bugs>
Severity: low Docs Contact:
Priority: low    
Version: 7.0CC: acathrow, hhuang, juzhang, michen, pbonzini, rhod, virt-maint, xfu
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2013-12-16 15:16:47 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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screen shot none

Description Xu Han 2013-11-12 08:53:48 UTC 
Description of problem:
windows 2008 R2 guest BSOD with '-no-kvm'

Version-Release number of selected component (if applicable):
qemu-kvm-rhev-1.5.3-18.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. boot windows 2008 R2 guest with '-no-kvm'
# /usr/libexec/qemu-kvm -nodefaults -M pc -m 4G -cpu Opteron_G3 -smp 4,cores=2,threads=2,sockets=1 -boot menu=on -monitor stdio -rtc base=localtime,clock=host,driftfix=slew -qmp tcp:0:5555,server,nowait -vga qxl -drive file=/home/win2008r2.qcow2_v3,format=qcow2,id=guest-img,if=none,werror=stop,rerror=stop -device ide-hd,drive=guest-img,id=os-disk -spice disable-ticketing,port=5931 -no-kvm

Actual results:
BSOD

Expected results:
guest can boot success

Additional info:
Comment 1 Xu Han 2013-11-12 08:54:22 UTC 
Created attachment 822785 [details]
screen shot
Comment 3 Yvugenfi@redhat.com 2013-11-18 09:57:24 UTC 
http://www.geoffchappell.com/studies/windows/km/bugchecks/5d.htm
Comment 4 Yvugenfi@redhat.com 2013-12-02 15:27:05 UTC 
Upstream reports:
https://bugs.launchpad.net/qemu/+bug/921208
http://lists.nongnu.org/archive/html/qemu-devel/2013-11/msg01063.html
Comment 5 Ronen Hod 2013-12-02 16:04:25 UTC 
Paolo,
What is your call?
Comment 6 Paolo Bonzini 2013-12-02 16:15:03 UTC 
Not a bug.
Comment 7 Ronen Hod 2013-12-02 17:12:56 UTC 
Paolo, How comes?
It should be fixable.
Are you saying that it is not needed? Could be, but it doesn't look good.
Can it happen to an innocent Libvirt user?
Comment 8 Paolo Bonzini 2013-12-03 09:52:43 UTC 
More precisely, not a bug as far as we are concerned.  We do not support TCG except for the very specific case of running libguestfs, I think?

It is fixable, but I have no idea whether it is easy or hard because I have no experience.

It can happen if you use 'qemu' instead of 'kvm' as the virtualization technology.  Perhaps we should add a "taint" flag to libvirt for domains that are not running under KVM and have qemu-kvm in the emulator name.