Subject: Re: Hyper-Threading Vulnerability
From: Lee Revell <rlrevell@joe-job.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Dave Jones <davej@redhat.com>,
       Matt Mackall <mpm@selenic.com>, Andy Isaacson <adi@hexapodia.org>,
       Andi Kleen <ak@muc.de>, "Richard F. Rebel" <rrebel@whenu.com>,
       Gabor MICSKO <gmicsko@szintezis.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, tytso@mit.edu
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Date: Sat, 14 May 2005 13:56:36 -0400
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On Sat, 2005-05-14 at 18:44 +0200, Arjan van de Ven wrote:
> then JACK is terminally broken if it doesn't have a fallback for non-
> rdtsc cpus. 

It does have a fallback, but the selection is done at compile time.  It
uses rdtsc for all x86 CPUs except pre-i586 SMP systems.

Maybe we should check at runtime, but this has always worked.

Lee

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