Bug 770122

Summary:	Remove max_cstate=1 from the oVirt Node kernel command line default options
Product:	[Retired] oVirt	Reporter:	Perry Myers <pmyers>
Component:	ovirt-node	Assignee:	Mike Burns <mburns>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acathrow, djuran, jboggs, mburns, ovirt-bugs, ovirt-maint
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	2.2.1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	770123 (view as bug list)		Environment:
Last Closed:	2012-01-18 16:11:36 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:
Bug Blocks:	770123, 770153

Description Perry Myers 2011-12-23 13:19:06 UTC

Description of problem:
max_cstate=1 was added to kernel defaults for oVirt Node due to a large portion of hardware having issues w/ time sync in kvm.

As long as hardware has a stable/constant tsc, it should be safe to remove this restriction.  People with older hardware can always manually add it back in.

Comment 1 Mike Burns 2012-01-03 13:43:03 UTC

http://gerrit.ovirt.org/860