From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from caramon.arm.linux.org.uk ([217.147.92.249]:33802 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758621AbXGNRRO (ORCPT ); Sat, 14 Jul 2007 13:17:14 -0400 Date: Sat, 14 Jul 2007 18:16:26 +0100 From: Russell King Subject: Re: [PATCH 0/7] Sparsemem Virtual Memmap V5 Message-ID: <20070714171626.GA2037@flint.arm.linux.org.uk> References: <20070713104044.0d090c79.akpm@linux-foundation.org> <20070714085754.GA28581@flint.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-arch-owner@vger.kernel.org To: Christoph Lameter Cc: Andrew Morton , linux-mm@kvack.org, linux-arch@vger.kernel.org, Andy Whitcroft , Nick Piggin , Mel Gorman List-ID: On Sat, Jul 14, 2007 at 08:10:49AM -0700, Christoph Lameter wrote: > On Sat, 14 Jul 2007, Russell King wrote: > > > It would also be nice to convert ARM to using sparsemem rather than > > discontigmem, but despite having a patch adding the supporting common > > infrastructure for the last year and a half or so, no one in the ARM > > community is interested in it. > > Yeah I was also not interested for the longest time because when I > became concerned when I looked at the code generated by sparsemem for > virt_to_page and page_address. But that is different now. > > > Since I've no machines which use the present discontig support and > > have more than a single bank of memory, I've no way to test and > > progress sparsemem on ARM - and since no one's interested I'm probably > > going to drop the ARM sparsemem git branch soon. > > Could you keep it around for a while longer? sparse_virtual now allows > code reduction in page_address and virt_to_page even vs. discontig. The patch is at: http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/arm:sparsemem.diff it's not much. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: