From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754270AbZHCDV2 (ORCPT ); Sun, 2 Aug 2009 23:21:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752785AbZHCDV2 (ORCPT ); Sun, 2 Aug 2009 23:21:28 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:60136 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752244AbZHCDV1 (ORCPT ); Sun, 2 Aug 2009 23:21:27 -0400 Date: Sun, 02 Aug 2009 20:21:35 -0700 (PDT) Message-Id: <20090802.202135.63875488.davem@davemloft.net> To: mingo@elte.hu Cc: a.p.zijlstra@chello.nl, joerg.roedel@amd.com, fujita.tomonori@lab.ntt.co.jp, reif@earthlink.net, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, tony.luck@intel.com, akpm@linux-foundation.org Subject: Re: [PATCH v2 0/8] sparc: use asm-generic/dma-mapping-common.h and pci-dma-compat.h From: David Miller In-Reply-To: <20090718110620.GC27287@elte.hu> References: <20090714092354.GL19087@amd.com> <20090714.131224.205307048.davem@davemloft.net> <20090718110620.GC27287@elte.hu> X-Mailer: Mew version 6.2.51 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ingo Molnar Date: Sat, 18 Jul 2009 13:06:20 +0200 > I'm wondering why sparc32 frees from the middle of the kernel image. > The way architectures generally do it is to put freeable pages into > a separate section. That way it does not get mingled with the kernel > core image area (which stays nicely continuous). It's conditionally free'able, we actually use the pages if the system is SMP and has more than cpu 0 installed.