Bug 871350

Summary:	Add minimal hyper-v support to kvm in order to support relaxed timing feature
Product:	Red Hat Enterprise Linux 6	Reporter:	Vadim Rozenfeld <vrozenfe>
Component:	kernel	Assignee:	Vadim Rozenfeld <vrozenfe>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	high	Docs Contact:
Priority:	high
Version:	6.4	CC:	bcao, chayang, dhoward, juzhang, lyarwood, michen, qzhang, rhod, xfu
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-2.6.32-351.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-21 06:54:29 UTC	Type:	Bug
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:
Bug Blocks:	801196, 895654, 1005207, 1005210

Description Vadim Rozenfeld 2012-10-30 10:06:32 UTC

Description of problem:
Add minimal hyper-v support to kvm in order to support relaxed timing feature

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

Comment 1 Vadim Rozenfeld 2012-10-30 10:10:56 UTC

I've added some minimal hyper-v support to kvm.
The relevant build is available at 
https://brewweb.devel.redhat.com/taskinfo?taskID=5024958

Comment 2 Jarod Wilson 2012-12-20 21:25:57 UTC

Patch(es)

Comment 5 FuXiangChun 2012-12-25 10:55:57 UTC

reproduce this issue with unfix kernel 2.6.32-347.el6.x86_64 and fixed qemu-kvm-0.12.1.2-2.348.el6.x86_64

steps to reproduce 

1. /usr/libexec/qemu-kvm -m 256G -smp 48,cores=48,sockets=1,threads=1 -cpu cpu64-rhel6,hv_relaxed -drive file=/home/win2k8r2.qcow2,format=qcow2,if=none,id=drive-virtio0,cache=none,werror=stop,rerror=stop -device ide-drive,drive=drive-virtio0,id=virtio-blk-pci0,bootindex=1 -netdev tap,sndbuf=0,id=hostnet0,script=/etc/qemu-ifup,downscript=no,vhost=on -device virtio-net-pci,netdev=hostnet0,mac=00:10:1a:61:72:01,bus=pci.0,addr=0x4,id=virtio-net-pci0 -uuid 7678e130-f1a7-4157-875a-8defcdb27af7 -rtc base=localtime,clock=host,driftfix=slew -no-kvm-pit-reinjection -name amd-max-sut -vnc :1 -numa node -numa node -numa node -numa node -numa node -numa node -numa node -numa node -numa node -numa node -numa node -numa node -monitor stdio

result: guest BSOD

verify it with fixed kernel and fixed qemu 
fixed-qemu-kvm-0.12.1.2-2.348.el6.x86_64 and fixed kernel 2.6.32-351.el6.x86_64

use the same steps above.

result: guest work well

so this bug is fixed

Comment 6 juzhang 2013-01-04 05:27:26 UTC

According to comment5, set this issue as verified.

Comment 8 errata-xmlrpc 2013-02-21 06:54:29 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0496.html

Comment 9 Ademar Reis 2013-09-06 12:20:54 UTC

We're going to backport the fix for bug 801196 to the z-stream of RHEL-6.3 and RHEL-6.2, so we need this fix as well, because it's a dependency.