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Subject: Re: Missed jiffies
To: hpa@zytor.com (H. Peter Anvin)
Date: Mon, 18 Feb 2002 19:33:34 +0000 (GMT)
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <a4pbvi$iq2$1@cesium.transmeta.com> from "H. Peter Anvin" at Feb 17, 2002 02:48:18 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> If the TSC is affected by HLT, throttling, or C2 power management, the
> TSC is broken (as it is on Cyrix chips, for example.)  The TSC usually
> *is* affected by C3 power management, but the OS should be aware of
> C3.

ACPI is irrelevant to the machines in question. This is all APM era stuff
and yes some people change the base clock, not stpclk. The cyrix hlt is
already handled
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