linux-kernel - RE: powernow-k8 and non-standard multipliers

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Message-ID: <1449F58C868D8D4E9C72945771150BDF020770FF@SAUSEXMB1.amd.com>
Date:	Tue, 13 Nov 2007 09:06:16 -0600
From:	"Langsdorf, Mark" <mark.langsdorf@....com>
To:	"Philip Langdale" <philipl@...rt.org>,
	"LKML" <linux-kernel@...r.kernel.org>
Subject: RE: powernow-k8 and non-standard multipliers

> I've just upgraded to an X2 5000+ black edition. This model
> doesn't have a multiple lock and I tried bumping the multiplier
> up, which is perfectly stable, but which causes powernow-k8 to
> fail to load. I also tried with the updated patch you posted
> at the beginning of october (http://lkml.org/lkml/2007/10/9/224)
> which didn't make a difference.
> 
> Is it possible to make the driver work in this situation or does
> a non-standard multipler inherently mean that powernow stops
> working?

The standard PowerNow! driver, by design, will stop 
working in this situation.  I'm not going to support
a driver that allows non-standard multipliers because
it could cause a lot of hard to debug maintenance
issues.

-Mark Langsdorf
Operating System Research Center
AMD


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