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From: Dave Jones <davej@codemonkey.org.uk>
To: Michael Buesch <fsdeveloper@yahoo.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.5 'what to expect' document.
Date: Mon, 14 Apr 2003 22:13:15 +0100	[thread overview]
Message-ID: <20030414211311.GA11160@suse.de> (raw)
In-Reply-To: <200304142308.03553.fsdeveloper@yahoo.de>

On Mon, Apr 14, 2003 at 11:08:03PM +0200, Michael Buesch wrote:

 > Will it be implemented in future to taint the kernel if CPU is overclocked?

Theoretically possible on most CPUs, but it's not that simple.
- Some CPUs don't encode the necessary bits to tell you their
  current multiplier/FSB
- Some CPUs don't encode the necessary info to tell you the speed
  the CPU should be running at.

Which leaves those that do have the necessary info..
Which is different per vendor, per family, per model.
That's a lot of tests, and it's not a walk in the park to get
it all right, which is probably why no-one has done it yet.

Alan tried it in the 2.4.early-ac stage, but gave up on it
after a while, after getting lots of reports of it not working
out as planned..

		Dave


  reply	other threads:[~2003-04-14 21:02 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-14 19:31 2.5 'what to expect' document Dave Jones
2003-04-14 21:08 ` Michael Buesch
2003-04-14 21:13   ` Dave Jones [this message]
2003-04-14 21:25     ` Michael Buesch
2003-04-14 21:48 ` Sam Ravnborg
2003-04-14 21:57   ` Robert Love
2003-04-15  5:13     ` Sam Ravnborg
2003-04-14 21:59   ` Valdis.Kletnieks
2003-04-14 22:07     ` Robert Love
2003-04-15  0:15     ` Wichert Akkerman
2003-04-15  5:15 ` Randy.Dunlap
2003-04-15 11:06   ` Dave Jones
2003-04-15  5:19 ` Nigel Cunningham
2003-04-15 11:07   ` Dave Jones
2003-04-15 21:24     ` Nigel Cunningham
2003-04-15 21:29       ` Randy.Dunlap

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