From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from atlrel7.hp.com (atlrel7.hp.com [156.153.255.213]) by dsl2.external.hp.com (Postfix) with ESMTP id 4BC424845 for ; Mon, 29 Sep 2003 23:33:58 -0600 (MDT) Received: from redsea.india.hp.com (redsea.india.hp.com [15.76.97.3]) by atlrel7.hp.com (Postfix) with ESMTP id EF16C1C00093 for ; Tue, 30 Sep 2003 01:33:54 -0400 (EDT) Received: from india.hp.com (eb9856.india.hp.com [15.76.98.56]) by redsea.india.hp.com (8.9.3 (PHNE_28810)/8.9.3 SMKit7.02) with ESMTP id LAA20300 for ; Tue, 30 Sep 2003 11:12:49 +0530 (IST) Message-ID: <3F7915A7.1F54379@india.hp.com> Date: Tue, 30 Sep 2003 11:03:28 +0530 From: Naresh Reply-To: knaresh@india.hp.com MIME-Version: 1.0 To: parisc-linux@lists.parisc-linux.org Content-Type: text/plain; charset=us-ascii Subject: [parisc-linux] MAX_ADDRESS. Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: Hi, This question is relevant to the 2.4 kernel. Is MAX_ADDRESS really the highest virtual address mapped by the kernel? I can see this comment in 'paging_init()' in the section for DISCONTIGMEM. However, pagetable_init() doesnt make a check before it calls 'map_pages( )' for all the ranges of memory. So we may DISCONTIGMEM turned off but it may so happen that we have a 'pmem_ranges[]' entry that is greater than MAX_ADDRESS which may find its way into the kernel page tables. Regards, Naresh.