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Subject: Re: Incorrect mdelay() results on Power Managed Machines x86
To: timw@splhi.com
Date: Fri, 23 Mar 2001 09:45:37 +0000 (GMT)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox),
        twoller@crystal.cirrus.com (Woller Thomas), andrew.grover@intel.com,
        linux-kernel@vger.kernel.org
In-Reply-To: <20010322174233.A1651@kochanski.internal.splhi.com> from "Tim Wright" at Mar 22, 2001 05:42:33 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> If it's a 500MHz Thinkpad, then I'm guessing it's something like a 600X.
> That doesn't have Speedstep. The speed changes are done by some circuitry
> in the laptop. I can try to find out more if this would help.
> The newer machines are using Speedstep.

Ok

Any info on how the laptop wants to tell the OS about CPU speed changes that
we can hook into would be wonderful

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