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Subject: RE: [BUG?] Xeon with HyperThreading and linux-2.4.20-rc2
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Steffen Persvold <sp@scali.com>
Cc: "Nakajima, Jun" <jun.nakajima@intel.com>,
       Arjan van de Ven <arjanv@redhat.com>, Hugh Dickins <hugh@veritas.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: 20 Nov 2002 16:55:24 +0000
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On Wed, 2002-11-20 at 16:00, Steffen Persvold wrote:
> On Wed, 20 Nov 2002, Nakajima, Jun wrote:
> 
> > As Hugh pointed out, the MPS table should report the physical processors
> > only even if HT is enabled. The major reason is to support legacy OSes that
> > don't support HT well. If the BIOS has an option for you to enable/disable
> > HT, then please use it. 
> 
> But since my BIOS reports 4 CPU's in the MPS table (with HT enabled), I 
> guess the BIOS is doing something wrong ? Should I report this to the 
> vendor ?

Im not sure about "wrong". Unusual perhaps. Nothing in the MPS spec
prohibits this that I can see

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