Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932391AbWI0EBm (ORCPT ); Wed, 27 Sep 2006 00:01:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932394AbWI0EBm (ORCPT ); Wed, 27 Sep 2006 00:01:42 -0400 Received: from 70-91-206-233-BusName-SFBA.hfc.comcastbusiness.net ([70.91.206.233]:33685 "EHLO saville.com") by vger.kernel.org with ESMTP id S932391AbWI0EBm (ORCPT ); Wed, 27 Sep 2006 00:01:42 -0400 Message-ID: <4519F7A9.4050807@saville.com> Date: Tue, 26 Sep 2006 21:01:45 -0700 From: Wink Saville User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Zero copy between ISR, kernel and User Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 672 Lines: 19 Hello, I would like to allow the transferring of data between ISR's, kernel and user code, without requiring copying. I envision allocating buffers in the kernel and then mapping them so that they appear at the same addresses to all code, and never being swapped out of memory. Is this feasible for all supported Linux architectures and is there existing code that someone could point me towards? Regards, Wink Saville - 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/