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Bug 732859

Summary:	Power_Management_Guide/ASPM.htm documentation incorrect
Product:	Red Hat Enterprise Linux 6	Reporter:	universe6 <universe6>
Component:	doc-Power_Management_Guide	Assignee:	Jack Reed <jreed>
Status:	CLOSED CURRENTRELEASE	QA Contact:	ecs-bugs
Severity:	high	Docs Contact:
Priority:	medium
Version:	6.1	CC:	dayleparker, gasmith, jreed, jskarvad, jskeoch, pbokoc
Target Milestone:	rc	Keywords:	Documentation
Target Release:	6.2
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-06-22 00:15:45 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:

Description universe6 2011-08-23 23:47:24 UTC

Documentation at http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Power_Management_Guide/ASPM.html states

"ASPM policies are set in /sys/module/pcie_aspm/parameters/policy, but can also be specified at boot time with the pcie_aspm kernel parameter, where pcie_aspm=off disables ASPM and pcie_aspm=force enables ASPM, even on devices that do not support ASPM."


This is not correct. It should be something like

pcie_aspm.policy=performance

and so on

Comment 3 Jack Reed 2011-10-04 23:31:05 UTC

Due to a lack of high priority issues identified during the development phase, we did not allocate resources to release a new version of the Power Management Guide for 6.2. 

To fix this in time for the 6.2 release, we would need an exception from the PM, please.

Otherwise, we'll be sure to fix it for 6.3.

Comment 4 Jack Reed 2011-12-12 01:30:19 UTC

Thanks for reporting this. 

Although the pcie_aspm=performance command isn't in the ASPM section, I've changed the other instances of pcie_aspm= to pcie_aspm.policy=

This change will be available in the 6.3 version of the guide.

Comment 7 Jack Reed 2011-12-13 23:23:45 UTC

Jaroslav, are you able to confirm that the change of command format from pcie_aspm= to pcie_aspm.policy= is correct? Thanks.

Comment 8 Jaroslav Škarvada 2011-12-15 10:41:30 UTC

Hi Jack, the new version of the text is also not correct. I propose something like (feel free to reword):

"ASPM support can be enabled / disabled by pci_aspm kernel parameter, where pcie_aspm=off disables ASPM and pcie_aspm=force enables ASPM, even on devices that do not support ASPM. ASPM policies are set in /sys/module/pcie_aspm/parameters/policy, but can be also specified at boot time with the pcie_aspm.policy kernel parameter, where for example pcie_aspm.policy=performance will set the ASPM performance policy."

Comment 9 Jack Reed 2011-12-16 01:15:54 UTC

Thanks Jaroslav, that's terrific.

I've incorporated this into the ASPM section.

QE, this is ready for verification.

Comment 15 Dayle Parker 2012-06-22 00:15:45 UTC

This bug is now fixed and available as part of the Red Hat Enterprise Linux 6.3 release on http://docs.redhat.com/.

Setting to CLOSED > CURRENTRELEASE.