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Bug 456300 - IPMI: Restrict keyboard io port reservation
Summary: IPMI: Restrict keyboard io port reservation
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.3
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Peter Martuccelli
QA Contact: Martin Jenner
Depends On:
TreeView+ depends on / blocked
Reported: 2008-07-22 17:57 UTC by Peter Martuccelli
Modified: 2009-01-20 20:25 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2009-01-20 20:25:26 UTC
Target Upstream Version:

Attachments (Terms of Use)
Restrict keyboard io port reservation (deleted)
2008-07-24 19:52 UTC, Markus Armbruster
no flags Details | Diff

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:0225 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.3 kernel security and bug fix update 2009-01-20 16:06:24 UTC

Description Peter Martuccelli 2008-07-22 17:57:19 UTC
Commit:     9096bd7a66efbe406910365c5206a32eed3875af
Parent:     fd3c3ed5d1e3ceb37635cbe6d220ab94aae0781d
Author:     Helge Wagner <>
AuthorDate: Tue Apr 29 14:20:40 2008 +0200
Committer:  Thomas Gleixner <>
CommitDate: Sat May 10 19:31:45 2008 +0200

    x86: restrict keyboard io ports reservation to make ipmi driver work
    On some of our (single board computer) boards (x86) we are using an
    IPMI controller that uses I/O ports 0x62 and 0x66 for a KCS (keyboard
    controller style) IPMI system interface.
    Trying to load the openipmi driver fails, because the ports
    (0x62/0x66) are reserved for keyboard. keyboard reserves the full
    range 0x60-0x6F while it doesn't need to.
    Reserve only ports 0x60 and 0x64 for the legacy PS/2 i8042 keyboad
    controller instead of 0x60-0x6F to allow the openipmi driver to work.

Comment 1 RHEL Product and Program Management 2008-07-22 18:02:37 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

Comment 3 Markus Armbruster 2008-07-24 19:52:45 UTC
Created attachment 312591 [details]
Restrict keyboard io port reservation

Straightforward backport from the upstream commit referenced in the bug
description, extended to cover Xen.  Submitted to xen-devel unchanged, as it
applies cleanly to their (non-pvops) kernel.

Comment 4 Markus Armbruster 2008-07-25 13:14:51 UTC
Patch from comment#3 is now in
as changeset 617:6d9e4b02bba4.

Comment 5 Don Zickus 2008-07-31 00:49:36 UTC
in kernel-2.6.18-101.el5
You can download this test kernel from

Comment 9 errata-xmlrpc 2009-01-20 20:25:26 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

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