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Date: Fri, 14 Dec 2007 15:16:20 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "David P. Reed" <dpreed@reed.com>
Cc: David Newall <david@davidnewall.com>,
       Rene Herman <rene.herman@keyaccess.nl>, Paul Rolland <rol@as2917.net>,
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       linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
       Ingo Molnar <mingo@redhat.com>, rol@witbe.net
Subject: Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64
 with MCP51 laptops
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On Thu, 13 Dec 2007 20:50:33 -0500
"David P. Reed" <dpreed@reed.com> wrote:

> Simulating 1 microsecond delays (assuming LPC meets that goal for 0x80) 
> is "absolutely correct" for devices provided on PCI-X running on 3 GHz 
> or greater machines?

Yes - the LPC bus clock doesn't change for the CPU clock.