From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752541Ab0AHHdt (ORCPT ); Fri, 8 Jan 2010 02:33:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750799Ab0AHHdt (ORCPT ); Fri, 8 Jan 2010 02:33:49 -0500 Received: from dedale.eve-team.com ([194.79.182.190]:42700 "EHLO dedale.eve-team.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751445Ab0AHHds (ORCPT ); Fri, 8 Jan 2010 02:33:48 -0500 X-Greylist: delayed 578 seconds by postgrey-1.27 at vger.kernel.org; Fri, 08 Jan 2010 02:33:48 EST Message-ID: <4B46DD95.3030704@eve-team.com> Date: Fri, 08 Jan 2010 08:24:05 +0100 From: Frederic Dumoulin Organization: EVE User-Agent: Thunderbird 1.5.0.10 (X11/20070301) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: usage of memory reserved at boot time Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I need to reserve 64MB of contiguous memory for DMA usage with a PCIe board, I'm using RHEL 5.4 and 2.6.18-164.el5. I reserved this memory with the option memmap=64M$64M at boot-time. I'd like to be sure that the reservation was succesful before remapping it in my module with ioremap, Can I use something like check_mem_region ? Thanks for your help. Regards, Frédéric