Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753280AbZG2Oeg (ORCPT ); Wed, 29 Jul 2009 10:34:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752125AbZG2Oeg (ORCPT ); Wed, 29 Jul 2009 10:34:36 -0400 Received: from casper.infradead.org ([85.118.1.10]:56742 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751090AbZG2Oef (ORCPT ); Wed, 29 Jul 2009 10:34:35 -0400 Date: Wed, 29 Jul 2009 07:36:45 -0700 From: Arjan van de Ven To: "Aaron Gray" Cc: "Linux Kernel Mailing List" Subject: Re: Does Linux support Data Exectiion Protection ? Message-ID: <20090729073645.13f72a33@infradead.org> In-Reply-To: <864C1A9245EB4A3581996E6477890451@HPLAPTOP> References: <864C1A9245EB4A3581996E6477890451@HPLAPTOP> Organization: Intel X-Mailer: Claws Mail 3.7.1 (GTK+ 2.14.7; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1099 Lines: 32 On Wed, 29 Jul 2009 15:08:35 +0100 "Aaron Gray" wrote: > Does Linux suppoert DEP, on newer x86 CPU's ? it does and has been for the better part of at least 5 years. > I am wondering as this does effect alot of VM's using JIT technology > if they are wriiten without proper code memory allocation. given how old our support is, all JITs seem to be working. In addition there is a compatibility provision for legacy binaries implemented. > This is a > problem for StrongTalk and FoNC' IDC. If EP is availiable how > configurable is it ? just make sure you use 64 bit pagetables (either a 64 bit kernel or a 32 bit kernel with PAE support) and you get the support. -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/