linux-kernel - Re: Regression in 2.6.27 caused by commit bfc0f59

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Date:	Mon, 1 Sep 2008 15:02:18 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Thomas Gleixner <tglx@...utronix.de>
cc:	Larry Finger <Larry.Finger@...inger.net>,
	LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Alok Kataria <akataria@...are.com>,
	Michael Buesch <mb@...sch.de>
Subject: Re: Regression in 2.6.27 caused by commit bfc0f59



On Mon, 1 Sep 2008, Thomas Gleixner wrote:
> 
> The CPU calibration of < 2.6.27 is against PIT and does _NOT_ give me a
> pretty good estimation for TSC.

Umm. Which one. The 32-bit or the 64-bit?

I already pointed out that the 64-bit PIT calibration is pure and utter 
GARBAGE. And I pointed out that the 32-bit one is a lot smarter.

> I was pretty happy when Alok beat me to unify the TSC calibration code
> as it solved one of my long standing todo items, which also filled my
> buglist on a regular base.

The problem is that he unified it around the _worse_ code.

			Linus
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