Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754489AbXINH6W (ORCPT ); Fri, 14 Sep 2007 03:58:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752962AbXINH6M (ORCPT ); Fri, 14 Sep 2007 03:58:12 -0400 Received: from ug-out-1314.google.com ([66.249.92.175]:42878 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751399AbXINH6K (ORCPT ); Fri, 14 Sep 2007 03:58:10 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=DlfNXKOMEf6Po3A+RbLh7T5F+z8Ol+6suu7b6pFdYQ6xFcMJAXFJ8RQx1uzJbRX0jTcsJKVH02ivasdeLIt5hs3vM93zSbghMdWg7XVXwgjlRBOxnhoeQr0gOr0Y8+Va/u/28pAUdGIFYHHpucXUr5bvxIqj/w41KTmUnmtyTsk= Message-ID: <46EA3F07.9050806@gmail.com> Date: Fri, 14 Sep 2007 11:57:59 +0400 From: Manu Abraham User-Agent: Thunderbird 1.5.0.13 (X11/20070824) MIME-Version: 1.0 To: Markus Rechberger CC: Steven Toth , "video4linux-list@redhat.com" , "linux-dvb@linuxtv.org" , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" Subject: Re: [linux-dvb] [PATCH] Userspace tuner References: <46C1BCC5.9090709@amd.com> <20070913131353.GB26972@linuxtv.org> <46E95C54.4060502@gmail.com> <46E99F36.8090809@hauppauge.com> <46E9DDC7.4000403@hauppauge.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1433 Lines: 35 >>> What do you think about IOMMU? >>> >>> >> Just because AMD or INTEL want to invent some whizzy new technology it >> doesn't say anything about the TV card development and retail business. >> Intel and AMD have teams of Linux engineers helping operating system >> developers bring their ideas and technologies to new platforms. That's a >> million miles away from any of the TV board vendors I know of, who have >> little or NO fulltime linux developers and consider the < 5% market >> fringe at best. >> > > it helps to virtualize devices and introduces newer features for that. > Some interesting projects could be derrived out of that, there are > quite a few interesting papers floating around how drivers could be > handled in future. > IOMMU can be considered similar to the AGP GART, which is similar, remapping the Addresses, as far as i understand. Though you get a physical to virtual translation, what about interrupts, yet to be seen with how to do it with multipath scenarios. Something that i happened to read https://www.gelato.unsw.edu.au/archives/comp-arch/2007-March/007370.html Even Documentation/Intel-IOMMU.txt, doesn't seem to paint a very rosy picture Manu - 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/