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Message-ID: <20001119212404.A1175@bug.ucw.cz>
Date: Sun, 19 Nov 2000 21:24:04 +0100
From: Pavel Machek <pavel@suse.cz>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: "H. Peter Anvin" <hpa@transmeta.com>, "H. Peter Anvin" <hpa@zytor.com>,
        linux-kernel@vger.kernel.org
Subject: Re: rdtsc to mili secs?
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Hi!

> > > Anyway, this should be solvable by checking for clock change in the
> > > timer interrupt. This way we should be able to detect when the clock
> > > went weird with a 10 ms accuracy. And compensate for that. It should be
> > > possible to keep a 'reasonable' clock running even through the clock
> > > changes, where reasonable means constantly growing and as close to real
> > > time as 10 ms difference max.
> > > 
> > > Yes, this is not perfect, but still keep every program quite happy and
> > > running.
> > 
> > No. Udelay has just gone wrong and your old ISA xxx card just crashed
> > whole system. Oops.
> 
> Yes. But can you do any better than that? Anyway, I wouldn't expect to
> be able to put my old ISA cards into a recent notebook which fiddles
> with the CPU speed (or STPCLK ratio).

PCMCIA is just that: putting old ISA crap into modern hardware. Sorry.

								Pavel

-- 
I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care."
Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org
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