From owner-freebsd-questions Mon Sep 2 6:14: 1 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 077DD37B400 for ; Mon, 2 Sep 2002 06:14:00 -0700 (PDT) Received: from mailout03.sul.t-online.com (mailout03.sul.t-online.com [194.25.134.81]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7B8B043E3B for ; Mon, 2 Sep 2002 06:13:59 -0700 (PDT) (envelope-from garyj@jennejohn.org) Received: from fwd10.sul.t-online.de by mailout03.sul.t-online.com with smtp id 17lr1h-0004nV-03; Mon, 02 Sep 2002 15:13:57 +0200 Received: from peedub.jennejohn.org (520017439985-0001@[217.228.211.89]) by fmrl10.sul.t-online.com with esmtp id 17lr1U-2DsvTsC; Mon, 2 Sep 2002 15:13:44 +0200 Received: from peedub.jennejohn.org (localhost [127.0.0.1]) by peedub.jennejohn.org (8.12.6/8.11.6) with ESMTP id g82DCt0O088941; Mon, 2 Sep 2002 15:13:06 +0200 (CEST) (envelope-from garyj@peedub.jennejohn.org) Message-Id: <200209021313.g82DCt0O088941@peedub.jennejohn.org> X-Mailer: exmh version 2.5 07/13/2001 with nmh-1.0.3 To: magudexter Cc: freebsd-questions@freebsd.org Subject: Re: k6 or i686 optimization on AMD Athlon? Reply-To: Gary Jennejohn In-reply-to: Your message of "Mon, 02 Sep 2002 05:57:05 PDT." <20020902125705.39456.qmail@web20310.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 02 Sep 2002 15:12:55 +0200 From: Gary Jennejohn X-Sender: 520017439985-0001@t-dialin.net Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG magudexter writes: > Btw do you know anything about the non exec feature on > the i386 in FreeBSD - meaning that the stack no longer > executes code; this is a great increase in security as > it is the usual method for buffer overflows? Or do you > know where to ask/look for it? > IIRC there was discussion about using this feature, but things like signal trampolines on the stack require that the code be executable. The best place to ask about his would be hackers. --- Gary Jennejohn / garyj@jennejohn.org gj@freebsd.org gj@denx.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message