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From: Christoph Rohland <cr@sap.com>
To: Jeff Garzik <jgarzik@mandrakesoft.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Tigran Aivazian <tigran@veritas.com>,
        Mikael Pettersson <mikpe@csd.uu.se>, Jordan <ledzep37@home.com>,
        Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Error in x86 CPU capabilities starting with test5/6
In-Reply-To: <E13wkLK-0000bP-00@the-village.bc.nu> <qwwpujuvk1s.fsf@sap.com>
	<3A152DC1.21B35324@mandrakesoft.com>
Organisation: SAP LinuxLab
Date: 17 Nov 2000 14:21:03 +0100
In-Reply-To: Jeff Garzik's message of "Fri, 17 Nov 2000 08:08:17 -0500"
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Hi Jeff,

On Fri, 17 Nov 2000, Jeff Garzik wrote:
> IIRC, this came up a long time ago WRT Apache, which made a lot of
> gettimeofday() calls.  Someone (Linus?) proposed the solution of a
> 'magic page' which holds information like gettimeofday() stuff, but
> could be handled much more rapidly than a standard syscall.

Yes, I followed that thread closely and would love to see this as the
implementation for gettimeofday. This would make rdtsc for
applications superfluous.

Greetings
		Christoph

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