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From: Andi Kleen <ak@suse.de>
To: "Brown, Len" <len.brown@intel.com>
Subject: Re: smp + acpi
Date: Wed, 26 Jul 2006 19:13:25 +0200
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> CONFIG_ACPI=y is necessary to parse the ACPI tables
> and discover HT siblings.  Except for the rare BIOS
> that gives the option to enumerate HT via MPS
> (thus breaking some versions of Windows),
> enabling ACPI is the only way to enable HT.
> 
> Yes, in the distant past, CONFIG_ACPI=n did not remove
> all ACPI code from your kernel, and that was a bug.

Ok thanks for the confirmation.

However the proposed change would be still wrong because
SMP can be without HT.

-Andi