Re: Hyper-Threading Vulnerability

Adrian Bunk
2005-05-15T09:33:38Z

On Sat, May 14, 2005 at 01:56:36PM -0400, Lee Revell wrote:
> 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.

If this is critical for JACK, runtime selection was an improvement for
distributions like Debian that support both pre-i586 SMP systems and
current hardware.

> Lee

cu
Adrian

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