From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261317AbTHXVAw (ORCPT ); Sun, 24 Aug 2003 17:00:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261316AbTHXVAw (ORCPT ); Sun, 24 Aug 2003 17:00:52 -0400 Received: from meryl.it.uu.se ([130.238.12.42]:35028 "EHLO meryl.it.uu.se") by vger.kernel.org with ESMTP id S261317AbTHXU7q (ORCPT ); Sun, 24 Aug 2003 16:59:46 -0400 Date: Sun, 24 Aug 2003 22:59:38 +0200 (MEST) Message-Id: <200308242059.h7OKxcCD028193@harpo.it.uu.se> From: Mikael Pettersson To: smiler@lanil.mine.nu, zwane@linuxpower.ca Subject: Re: Pentium-M? Cc: barryn@pobox.com, linux-kernel@vger.kernel.org, lkml@kcore.org Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 24 Aug 2003 22:20:13 +0200, Christian Axelsson wrote: >Hmm.. I have compiled my whole system with -march=pentium4 and yet not >had a single breakage. Are you sure that this is p3? Oh yes. The core is most definitely P6+tweaks and not NetBurst. This can be deduced from facts like: - CPUID family is 6 not 15 - performance counter architecture is like PIII with some minor tweaks but definitely nothing like P4 - treated separately from NetBurst in code optimization manual The reason compiling with -march=pentium4 doesn't break is that the differences ISA-wise are almost nil. /Mikael