Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262469AbVA0F3E (ORCPT ); Thu, 27 Jan 2005 00:29:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262479AbVA0F3E (ORCPT ); Thu, 27 Jan 2005 00:29:04 -0500 Received: from holomorphy.com ([66.93.40.71]:51690 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S262469AbVA0F3B (ORCPT ); Thu, 27 Jan 2005 00:29:01 -0500 Date: Wed, 26 Jan 2005 21:28:56 -0800 From: William Lee Irwin III To: Dave Jones Cc: Rik van Riel , Andrew Morton , linux-kernel@vger.kernel.org, James Antill , Bryn Reeves , rmk@arm.linux.org.uk Subject: Re: don't let mmap allocate down to zero Message-ID: <20050127052856.GT10843@holomorphy.com> References: <20050126172538.GN10843@holomorphy.com> <20050127050927.GR10843@holomorphy.com> <20050127051855.GB24107@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050127051855.GB24107@redhat.com> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1145 Lines: 24 On Wed, Jan 26, 2005 at 09:09:27PM -0800, William Lee Irwin III wrote: >> There's a long discussion here, in which no one appears to have noticed >> that SHLIB_BASE does not exist in mainline. Is anyone else awake here? On Thu, Jan 27, 2005 at 12:18:56AM -0500, Dave Jones wrote: > It's an exec-shield'ism. Rik likely was working off a Red Hat/Fedora > kernel tree. It does change things in a substantial way. Namely, the lower address space boundary doesn't exist in mainline at all, and so its enforcement requires introduction. Furthermore, mainline must concern itself with all Linux-supported architectures (not distro-supported architectures), not just ia32/x86-64, so there is also FIRST_USER_PGD_NR to take into account as opposed to pulling magic ia32/x86-64 -specific numbers out of a hat and splattering them all over core code. Not that you had anything to do with any of this. -- wli - 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/