From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261634AbVHCX27 (ORCPT ); Wed, 3 Aug 2005 19:28:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261644AbVHCX2y (ORCPT ); Wed, 3 Aug 2005 19:28:54 -0400 Received: from zcars04e.nortelnetworks.com ([47.129.242.56]:25737 "EHLO zcars04e.ca.nortel.com") by vger.kernel.org with ESMTP id S261634AbVHCX2o (ORCPT ); Wed, 3 Aug 2005 19:28:44 -0400 Message-ID: <42F15326.6000402@nortel.com> Date: Wed, 03 Aug 2005 17:28:38 -0600 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: "Christopher Friesen" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Linux Kernel Mailing List Subject: question on memory map of process on i386 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 On i386, /proc//maps shows the following entry: ffffe000-fffff000 ---p 00000000 00:00 0 This page of memory is way up above TASK_SIZE (which is 0xc0000000), so how is it visible to userspace? Just to complicate things, I seem to find the vma for this page using find_vma_prev(). Can anyone explain what's going on? Thanks, Chris