Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932326Ab1EYKAh (ORCPT ); Wed, 25 May 2011 06:00:37 -0400 Received: from hyde.gogi.tv ([87.106.161.174]:57192 "EHLO hyde.gogi.tv" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751397Ab1EYKAg (ORCPT ); Wed, 25 May 2011 06:00:36 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Wed, 25 May 2011 11:00:33 +0100 From: Daniel Haid To: Andi Kleen Cc: Konrad Rzeszutek Wilk , Subject: Re: Question about iommu on =?UTF-8?Q?x=38=36=5F=36=34=20and=20ra?= =?UTF-8?Q?deon=20driver=2E?= In-Reply-To: References: <6ac3f6faad655602b767aa14b355e982@admin.gogi.tv> <20110523220536.GB11961@dumpdata.com> <756073831c36e0404199a4e8239bcb70@admin.gogi.tv> Message-ID: <08370791664f069624d25c757ed101c0@admin.gogi.tv> User-Agent: Roundcube Webmail/0.4.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 653 Lines: 14 > I added it originally. The VIA chipset seems to hang on most > DMAs through the IOMMU, so it was disabled. I see. Now, maybe this will not work for some reason, but would it be possible to somehow disable both IOMMU and SWIOTLB and tell all drivers only to do DMA with the lower 4GB of memory? Unfortunately simply turning "iommu=off" does not work for me as the sata and pata drivers stop working. -- 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/