From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030213AbWCBVmT (ORCPT ); Thu, 2 Mar 2006 16:42:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932588AbWCBVmT (ORCPT ); Thu, 2 Mar 2006 16:42:19 -0500 Received: from stat9.steeleye.com ([209.192.50.41]:5304 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S932566AbWCBVmR (ORCPT ); Thu, 2 Mar 2006 16:42:17 -0500 Subject: RE: Question: how to map SCSI data DMA address to virtual address? From: James Bottomley To: "Ju, Seokmann" Cc: "linux-os (Dick Johnson)" , Jens Axboe , Linux kernel , linux-scsi@vger.kernel.org In-Reply-To: <9738BCBE884FDB42801FAD8A7769C2651420C5@NAMAIL1.ad.lsil.com> References: <9738BCBE884FDB42801FAD8A7769C2651420C5@NAMAIL1.ad.lsil.com> Content-Type: text/plain Date: Thu, 02 Mar 2006 15:42:07 -0600 Message-Id: <1141335727.3238.66.camel@mulgrave.il.steeleye.com> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2006-03-02 at 14:04 -0700, Ju, Seokmann wrote: > Thank you for your valueable comment. One good thing is that the system does 2 GB memory so that highmem won't come into picture. I am implementing the feature with suggestions. 2GB is well into highmem on a traditional x86 with a 3/1 split. For a private project, you're free to do as you wish subject to the constraints of the GPL. However, if you want whatever you're planning to go upstream someday you need to conform to the requirements of the Linux API which are as Jens and Christoph have already outlined. James