Bug 1206198 – Intel 9-series PCH chipset ACS quirks

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Bug 1206198 - Intel 9-series PCH chipset ACS quirks

Summary:	Intel 9-series PCH chipset ACS quirks

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	7.2
Hardware:	Unspecified Unspecified

Priority	medium Severity medium
Target Milestone:	pre-dev-freeze
Target Release:	7.2
Assigned To:	Myron Stowe
QA Contact:	Mike Gahagan
Docs Contact:

URL:
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Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2015-03-26 10:24 EDT by Alex Williamson
Modified:	2015-11-19 16:53 EST (History)
CC List:	2 users (show)

See Also:
Fixed In Version:	kernel-3.10.0-267.el7
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-11-19 16:53:00 EST
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2015:2152	normal	SHIPPED_LIVE	Important: kernel security, bug fix, and enhancement update	2015-11-19 19:56:02 EST

Groups: None (edit)

Description Alex Williamson 2015-03-26 10:24:36 EDT

Description of problem:

Intel 9-series PCH chipsets lack native ACS support and we lack quirks for them.  According to the datasheet, the device IDs for the PCH root ports on these chipsets are:

0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e

The 9-series products include popular chipsets such as Z97 and H97.  If Intel can confirm that these products provide isolation using the same programming model as used in bug 1037684, we can add quirks to expose the isolation of these root ports.

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


How reproducible:


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Expected results:


Additional info:

Comment 1 Alex Williamson 2015-03-26 10:27:02 EDT

Don, can we support this?

Comment 3 Alex Williamson 2015-05-01 15:30:15 EDT

Don has confirmed ACS-equivalent isolation for these root ports using the same setup as the existing Intel PCH ACS quirk.  Patch posted upstream:

http://permalink.gmane.org/gmane.linux.kernel.pci/41181

Re-assigning to myself for backport and post once accepted.

Comment 4 Alex Williamson 2015-06-10 13:03:46 EDT

linux-next:

commit dca230d162e27386d2ff24438ef56c645e55bf44
Author: Alex Williamson <alex.williamson@redhat.com>
Date:   Fri May 1 13:20:13 2015 -0600

    PCI: Add ACS quirks for Intel 9-series PCH root ports
    
    Intel confirms that 9-series chipset root ports provide ACS-equivalent
    isolation when configured via the existing Intel PCH ACS quirk setup.
    
    Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Acked-by: Don Dugger <donald.d.dugger@intel.com>

Comment 6 Rafael Aquini 2015-06-18 08:02:03 EDT

Patch(es) available on kernel-3.10.0-267.el7

Comment 9 Mike Gahagan 2015-09-24 14:28:39 EDT

Confirmed ACS quirks added per description, also have run numerous kernel and userspace tests on these platforms with any issues documented as separate bugs.

Comment 10 errata-xmlrpc 2015-11-19 16:53:00 EST

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.

https://rhn.redhat.com/errata/RHSA-2015-2152.html

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