Bug 654914

Summary:	Monotonic tsc userspace test fails on rhel6 guest
Product:	Red Hat Enterprise Linux 5	Reporter:	Zachary Amsden <zamsden>
Component:	kernel	Assignee:	Zachary Amsden <zamsden>
Status:	CLOSED WONTFIX	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	high	Docs Contact:
Priority:	high
Version:	5.7	CC:	akong, gcosta, llim, mjenner, mtosatti, shuang, syeghiay, tburke, virt-maint, ypu, zamsden
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	613904	Environment:
Last Closed:	2011-01-13 22:18:54 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:	569603, 584740, 595225, 613904
Bug Blocks:	580948, 654912

Comment 1 RHEL Program Management 2010-11-19 14:59:25 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 2 Zachary Amsden 2010-11-21 00:21:37 UTC

Unfortunately, this is a blocker for the slow AMD guest boot issue.

Comment 5 Zachary Amsden 2011-01-13 22:18:54 UTC

Please ignore the earlier parts of this bug, which are not related to TSC.  The SMP consistency issues with TSC on unstable hosts can not be resolved adequately without TSC trapping.

The TSC trapping code cannot be backported to 5.X kernels as it requires update clocksource code, so this issue can not be resolved in the 5.x series.