From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ns-ca.netscreen.com (ns-ca.netscreen.com [10.100.10.21]) by mail.netscreen.com (8.10.0/8.10.0) with ESMTP id f2NLLv503227 for ; Fri, 23 Mar 2001 13:21:57 -0800 Message-ID: From: Hua Ji Subject: About page table with powerpc 750 Date: Fri, 23 Mar 2001 15:37:38 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: owner-linux-mm@kvack.org Return-Path: To: Linux-MM@kvack.org List-ID: Hi, folks, A quick question today. Thanks in advance. For PowerPC, say, 750 architecture, does every process ALSO maintains its own page table, like the one under Intel x86 two level page tables? >>From powerpc manual, a 2M space needed to be reserved for mapping 256M physical memory. So, if every process maintain its own page table, that would be cost too much. If every process, at initial time, only holds a small size page table, how does the kernel extend the page table area? My thought is: With powerpc, the page table area is not a two level pointer, so, we need a contigeous physical memory. What the mechanism for linux with powerpc when handling the page table issue? Thanks a lot, Nike -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/