Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751498AbWAKRNU (ORCPT ); Wed, 11 Jan 2006 12:13:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751533AbWAKRNU (ORCPT ); Wed, 11 Jan 2006 12:13:20 -0500 Received: from rtr.ca ([64.26.128.89]:19148 "EHLO mail.rtr.ca") by vger.kernel.org with ESMTP id S1751467AbWAKRNT (ORCPT ); Wed, 11 Jan 2006 12:13:19 -0500 Message-ID: <43C53CA2.7070002@rtr.ca> Date: Wed, 11 Jan 2006 12:13:06 -0500 From: Mark Lord User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051013 Debian/1.7.12-1ubuntu1 X-Accept-Language: en, en-us MIME-Version: 1.0 To: Greg Norris Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH ] VMSPLIT config options (with default config fixed) References: <20060110132957.GA28666@elte.hu> <20060110133728.GB3389@suse.de> <20060110143931.GM3389@suse.de> <43C3E9C2.1000309@rtr.ca> <20060110173217.GU3389@suse.de> <43C3F0CA.10205@rtr.ca> <43C403BA.1050106@pobox.com> <43C40803.2000106@rtr.ca> <20060111160050.GA5472@yggdrasil.localdomain> In-Reply-To: <20060111160050.GA5472@yggdrasil.localdomain> 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 Content-Length: 610 Lines: 14 Greg Norris wrote: > Is there any benefit/point to enabling HIGHMEM when using this patch, > assuming that physical memory is smaller than the address space? For > example, when using VMSPLIT_3G_OPT on a box with 1G of memory. No. In fact, there should be a (very) tiny performance gain by NOT enabling HIGHMEM -- things like kmap() should get simpler. Cheers - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/