Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 17 Dec 2002 14:33:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 17 Dec 2002 14:33:16 -0500 Received: from tmr-02.dsl.thebiz.net ([216.238.38.204]:31756 "EHLO gatekeeper.tmr.com") by vger.kernel.org with ESMTP id ; Tue, 17 Dec 2002 14:33:15 -0500 Date: Tue, 17 Dec 2002 14:39:24 -0500 (EST) From: Bill Davidsen To: Dave Jones cc: Linux-Kernel Mailing List Subject: Re: Kernel for Pentium 4 hyperthreading? In-Reply-To: <20021215155819.GC20335@suse.de> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1113 Lines: 29 On Sun, 15 Dec 2002, Dave Jones wrote: > On Sun, Dec 15, 2002 at 04:47:39PM +0100, Vergoz Michael (SYSDOOR) wrote: > > Hi, > > > > It's possible to enable HT on any pentium 4, you just have to patch the bios > > :P > > A rumour perpetuated by many, and achieved by none to my knowledge. If W2k can tell if I enable HT or not, I assume it's really on. Particularly if it then tells me I have more than two CPUs, my license doesn't cover that, and it doesn't love me anymore. Actually, 2.5.recent can get this right using APCI and will also work. Guess the rumor is true, although I would say "many P4" rather than "all P4" because I believe Intel disables one sibling at the bonding step (based on information elsewhere) for some CPUs. -- bill davidsen CTO, TMR Associates, Inc Doing interesting things with little computers since 1979. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/