Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261221AbTHYHt5 (ORCPT ); Mon, 25 Aug 2003 03:49:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261252AbTHYHt5 (ORCPT ); Mon, 25 Aug 2003 03:49:57 -0400 Received: from unthought.net ([212.97.129.24]:46263 "EHLO unthought.net") by vger.kernel.org with ESMTP id S261221AbTHYHt4 (ORCPT ); Mon, 25 Aug 2003 03:49:56 -0400 Date: Mon, 25 Aug 2003 09:49:54 +0200 From: Jakob Oestergaard To: Jamie Lokier Cc: Jim Houston , linux-kernel@vger.kernel.org, jim.houston@ccur.com Subject: Re: [PATCH] Pentium Pro - sysenter - doublefault Message-ID: <20030825074954.GC29987@unthought.net> Mail-Followup-To: Jakob Oestergaard , Jamie Lokier , Jim Houston , linux-kernel@vger.kernel.org, jim.houston@ccur.com References: <1061498486.3072.308.camel@new.localdomain> <20030825040514.GA20529@mail.jlokier.co.uk> <20030825041423.GB29987@unthought.net> <20030825055028.GE20529@mail.jlokier.co.uk> <20030825062905.GA21262@mail.jlokier.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20030825062905.GA21262@mail.jlokier.co.uk> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1652 Lines: 45 On Mon, Aug 25, 2003 at 07:29:05AM +0100, Jamie Lokier wrote: > Jamie Lokier wrote: > > So that means the sysenter instruction _does_ exist on the PPro and > > early Pentium II, but it isn't usable. > > If anyone has information on what the SYSENTER and SYSEXIT > instructions actually do on Intel Pentium Pro or stepping<3 Pentium II > processors, I am very interested. I dug up a little more from the archeological site (machine room - sigh)... ------------------------------------------- model name : Pentium II (Deschutes) stepping : 2 $ ./syse Segmentation fault ------------------------------------------- model name : Celeron (Mendocino) stepping : 0 cpu MHz : 334.097 $ ./syse Segmentation fault ------------------------------------------- CPU: Pentium II/Pentium II Xeon/Celeron (299.94-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x651 Stepping = 1 $ ./syse Bus error (core dumped) ------------------------------------------- The last one is a FreeBSD box. -- ................................................................ : jakob@unthought.net : And I see the elder races, : :.........................: putrid forms of man : : Jakob ?stergaard : See him rise and claim the earth, : : OZ9ABN : his downfall is at hand. : :.........................:............{Konkhra}...............: - 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/