linux-kernel - Re: [RFC patch 0/4] TSC calibration improvements

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Date:	Thu, 4 Sep 2008 19:07:28 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Alok Kataria <akataria@...are.com>,
	Arjan van de Veen <arjan@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [RFC patch 0/4] TSC calibration improvements

> (And yes, I do the latching - it's not reqlly required since I only depend 
> on the MSB, and it actually makes for slightly lower precision, but it's 
> the "safe" thing. And I figured out that the reason I thought that the 

Good job you don't. Various Cyrix/Geode chipsets have as errata #2

"Counter latch command is non-operational in the 8254 timer"

Alan
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