Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264298AbTEGVim (ORCPT ); Wed, 7 May 2003 17:38:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264299AbTEGVim (ORCPT ); Wed, 7 May 2003 17:38:42 -0400 Received: from watch.techsource.com ([209.208.48.130]:4019 "EHLO techsource.com") by vger.kernel.org with ESMTP id S264298AbTEGVil (ORCPT ); Wed, 7 May 2003 17:38:41 -0400 Message-ID: <3EB980AA.9060207@techsource.com> Date: Wed, 07 May 2003 17:54:50 -0400 From: Timothy Miller User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jesse Pollard , Linux Kernel Mailing List Subject: Re: top stack (l)users for 2.5.69 References: <20030507132024.GB18177@wohnheim.fh-wedel.de> <03050716305002.07468@tabby> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 937 Lines: 26 Jesse Pollard wrote: > On Wednesday 07 May 2003 12:13, Jonathan Lundell wrote: > [snip] > >>One thing that would help (aside from separate interrupt stacks) >>would be a guard page below the stack. That wouldn't require any >>physical memory to be reserved, and would provide positive indication >>of stack overflow without significant runtime overhead. > > > It does take up a page table entry, which may also be in short supply Now, I'm sure this has GOT to be a terribly ignorant question, but I'll try anyhow: What happens if you simply neglect to provide a mapping for that page? I'm sure that will cause some sort of page fault. Why would you have to do something different? - 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/