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[209.132.180.67]) by mx.google.com with ESMTP id u129si15976293pfu.117.2018.12.12.06.40.47; Wed, 12 Dec 2018 06:41:19 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@xenosoft.de header.s=strato-dkim-0002 header.b=pneSKodZ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726325AbeLLOju (ORCPT + 99 others); Wed, 12 Dec 2018 09:39:50 -0500 Received: from mo4-p02-ob.smtp.rzone.de ([85.215.255.80]:19498 "EHLO mo4-p02-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726223AbeLLOju (ORCPT ); Wed, 12 Dec 2018 09:39:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1544625586; s=strato-dkim-0002; d=xenosoft.de; h=To:References:Message-Id:Cc:Date:In-Reply-To:From:Subject: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=UrXCJqBmcOaqJnTd5v/gj1AlYONWMF2EpPrI5UHxtdE=; b=pneSKodZUKiv5Jqq2o4B9qfZDnaBi1PvKd9AfnSXR+5t9OgxTDMC5mUxUiK6yOEu71 1WynVCf3QFfUVs7tSpgFTcZAKg5h+7S7IFFCtl+7K7tzgOeJNAqpZzxbxfgt7MHQhsMv i7V8fiTMo9JXxOGVhVcyBx/fOJ1pvTlqKuOLCNFgKF9HRF2rjAUFrRuEiBlfLo2TbKOJ vRUKkB+Zm18Au8Q4t6d1dj5kKeJWkVKCwrKJL7WR5jHtySrCP6E77lwJ06UJWm60qT69 0NofTRUttZ2Qqqf4TnW+qMTVsK8fcd5H2GvLLRDtRNC8x8T8z9DQNMLQqsxinmnnRrA7 Fgmg== X-RZG-AUTH: ":L2QefEenb+UdBJSdRCXu93KJ1bmSGnhMdmOod1DhGN0rBVhd9dFr6KxrfO5Oh7R7NWZ5ibo2kX7YcEyrDrI2aqXbiLXCWgdJGi+B78AE" X-RZG-CLASS-ID: mo00 Received: from [IPv6:2a01:598:8182:ce86:95bf:4292:9e3e:af3b] by smtp.strato.de (RZmta 44.7 AUTH) with ESMTPSA id j074b8uBCEdfCtK (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Wed, 12 Dec 2018 15:39:41 +0100 (CET) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (1.0) Subject: Re: use generic DMA mapping code in powerpc V4 From: Christian Zigotzky X-Mailer: iPhone Mail (15G77) In-Reply-To: <20181212141556.GA4801@lst.de> Date: Wed, 12 Dec 2018 15:39:40 +0100 Cc: linux-arch@vger.kernel.org, Darren Stevens , linux-kernel@vger.kernel.org, Julian Margetson , linux-mm@kvack.org, iommu@lists.linux-foundation.org, Paul Mackerras , Olof Johansson , linuxppc-dev@lists.ozlabs.org Content-Transfer-Encoding: quoted-printable Message-Id: <2242B4B2-6311-492E-BFF9-6740E36EC6D4@xenosoft.de> References: <1948cf84-49ab-543c-472c-d18e27751903@xenosoft.de> <5a2ea855-b4b0-e48a-5c3e-c859a8451ca2@xenosoft.de> <7B6DDB28-8BF6-4589-84ED-F1D4D13BFED6@xenosoft.de> <8a2c4581-0c85-8065-f37e-984755eb31ab@xenosoft.de> <424bb228-c9e5-6593-1ab7-5950d9b2bd4e@xenosoft.de> <1ecb7692-f3fb-a246-91f9-2db1b9496305@xenosoft.de> <6c997c03-e072-97a9-8ae0-38a4363df919@xenosoft.de> <4cfb3f26-74e1-db01-b014-759f188bb5a6@xenosoft.de> <82879d3f-83de-6438-c1d6-49c571dcb671@xenosoft.de> <20181212141556.GA4801@lst.de> To: Christoph Hellwig Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Christoph, Thanks a lot for your reply. I will test your patches tomorrow. Cheers, Christian Sent from my iPhone > On 12. Dec 2018, at 15:15, Christoph Hellwig wrote: >=20 > Thanks for bisecting. I've spent some time going over the conversion > but can't really pinpoint it. I have three little patches that switch > parts of the code to the generic version. This is on top of the > last good commmit (977706f9755d2d697aa6f45b4f9f0e07516efeda). >=20 > Can you check with wh=D1=96ch one things stop working? >=20 >=20 > <0001-get_required_mask.patch> > <0002-swiotlb-dma_supported.patch> > <0003-nommu-dma_supported.patch> > <0004-alloc-free.patch>