Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756002Ab0GGSIH (ORCPT ); Wed, 7 Jul 2010 14:08:07 -0400 Received: from casper.infradead.org ([85.118.1.10]:48631 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754669Ab0GGSIF (ORCPT ); Wed, 7 Jul 2010 14:08:05 -0400 Subject: Re: BUG in drivers/dma/ioat/dma_v2.c:314 From: David Woodhouse To: Dan Williams Cc: Chris Li , linux-kernel In-Reply-To: <4C34BDCD.9080607@intel.com> References: <4C2A8879.8010000@intel.com> <4C2AC55E.3040303@intel.com> <1277923422.16256.8.camel@localhost> <4C2B9DAC.1030806@intel.com> <1277928125.18854.0.camel@localhost> <4C2BBACF.3080405@intel.com> <1277965264.18854.16.camel@localhost> <4C2C3B07.7050200@intel.com> <1277968336.4945.3.camel@localhost> <4C2C4319.6090906@intel.com> <1277972137.12558.2.camel@localhost> <4C2CCE67.6070600@intel.com> <1278324973.16975.68.camel@localhost> <1278463901.20082.34.camel@dwillia2-linux> <1278474039.31393.8.camel@localhost> <4C34BDCD.9080607@intel.com> Content-Type: text/plain; charset="UTF-8" Date: Wed, 07 Jul 2010 19:07:56 +0100 Message-ID: <1278526076.5008.28.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.31.4 Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 772 Lines: 17 On Wed, 2010-07-07 at 10:47 -0700, Dan Williams wrote: > Chris this change will make the driver's dma mapping calls succeed which > means we once again need to be prepared for the case where the engine's > iommu is not configured correctly. It ought to succeed but do nothing -- just return the physical address as if you have no IOMMU (which for this device you don't). -- David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation -- 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/