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Message-id: <478568E3.6040409@shaw.ca>
Date: Wed, 09 Jan 2008 18:37:55 -0600
From: Robert Hancock <hancockr@...w.ca>
To: "David P. Reed" <dpreed@...d.com>
Cc: Christer Weinigel <christer@...nigel.se>,
Zachary Amsden <zach@...are.com>,
Avi Kivity <avi@...amnet.com>,
Ondrej Zary <linux@...nbow-software.org>,
"H. Peter Anvin" <hpa@...or.com>,
Rene Herman <rene.herman@...access.nl>,
Bodo Eggert <7eggert@....de>, Ingo Molnar <mingo@...e.hu>,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Paul Rolland <rol@...917.net>, Pavel Machek <pavel@....cz>,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
rol <rol@...be.net>
Subject: Re: Re: [PATCH] x86: provide a DMI based port 0x80 I/O
delay override.
David P. Reed wrote:
> Christer Weinigel wrote:
>>
>> Did I miss anyting?
>>
>>
> Nothing that seems *crucial* going forward for Linux. The fate of
> "legacy machines" is really important to get right.
>
> I have a small suggestion in mind that might be helpful in the future:
> the "motherboard resources" discovered as PNP0C02 devices in their _CRS
> settings in ACPI during ACPI PnP startup should be reserved (or
> checked), and any drivers that still use port 80 implicitly should
> reserve that port.
I agree. In this case the BIOS on these laptops is trying to tell us
"port 80 is used for our purposes, do not touch it". We should be listening.
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/
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