linux-kernel - Re: [lm-sensors] Could the k8temp driver be interfering with ACPI?

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Message-ID: <20070302113158.GC2156@elf.ucw.cz>
Date:	Fri, 2 Mar 2007 12:31:58 +0100
From:	Pavel Machek <pavel@....cz>
To:	Jean Delvare <khali@...ux-fr.org>
Cc:	Dave Jones <davej@...hat.com>, Chuck Ebbert <cebbert@...hat.com>,
	Rudolf Marek <r.marek@...embler.cz>,
	linux-acpi@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	lm-sensors@...sensors.org
Subject: Re: [lm-sensors] Could the k8temp driver be interfering with ACPI?

Hi!

> >  > Firstly, the first records of hidden SMBus, in September 2000, predate
> >  > ACPI.
> > 
> > The earliest ACPI spec I have handy is 1.0b, which came out in Feb 2 1999
> > so this isn't true. The all knowing (and always accurate :) wikipedia
> > claims it was first released in 1996, though I believe that all the pre 1.0b
> > machines were using acpi implementations before the standard was finalised.
> > 
> > I certainly remember seeing ACPI capable machines circa 1997/1998.
> 
> Yeah, and these early ACPI implementations were so good that we have an
> option to blacklist them.
> arch/i386/defconfig:CONFIG_ACPI_BLACKLIST_YEAR=2001
> 
> My point (which you didn't quote) was that there is no correlation
> between the SMBus being hidden and ACPI accessing the hardware
> monitoring chip, contrary to what Pavel was suggesting.

It may not be correlated with ACPI, but BIOS authors clearly want to
keep you away from their SMBus controllers....
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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