Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264377AbUFPSGQ (ORCPT ); Wed, 16 Jun 2004 14:06:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264397AbUFPSGQ (ORCPT ); Wed, 16 Jun 2004 14:06:16 -0400 Received: from werewolf.schneelocke.net ([62.8.212.6]:54825 "EHLO werewolf.schneelocke.net") by vger.kernel.org with ESMTP id S264377AbUFPSDb (ORCPT ); Wed, 16 Jun 2004 14:03:31 -0400 Date: Wed, 16 Jun 2004 19:59:02 +0200 From: lkml@gl00on.net To: Phy Prabab Cc: linux-kernel@vger.kernel.org Subject: Re: Programtically tell diff between HT and real Message-ID: <20040616175902.GC12094@werewolf.schneelocke.net> References: <20040616174646.70010.qmail@web51805.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040616174646.70010.qmail@web51805.mail.yahoo.com> X-Face: "/lf:;F?1M2u`>bt]h&FhSRZ"hM>a_b!7A;I1Lc!rWw'INc+S-NYk|&?>I2.KiJMku(vOc0|'VK#FGE5:F~+BwY$Ddi)?fp[&xy/89jGCVnS/[aN-[Z0bGuM./UD}3*c5AbucK=l!8(&^4=\qH}_(M]r`t3:_OjYFu Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 745 Lines: 18 > Is there a way to tell the difference between normal > processors and HT enabled processors? That is, does > the linux kernel know the difference and is there a > way to to know the difference. Execute the CPUID instruction with EAX=00000001h. I think HT-enabled cpus should have bit 28 of the value returned in EDX set. -- 7:57PM up 134 days, 5:11, 1 user, load averages: 0.16, 0.18, 0.16 Every non-empty totally disconnected perfect compact metric space is homeomorphic to the Cantor set. - 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/