From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC492C3A5A6 for ; Tue, 27 Aug 2019 11:55:48 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A3ED820828 for ; Tue, 27 Aug 2019 11:55:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3ED820828 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 441F61499; Tue, 27 Aug 2019 11:55:48 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B6BFD1498 for ; Tue, 27 Aug 2019 11:55:46 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 53338756 for ; Tue, 27 Aug 2019 11:55:46 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id A5EFF68AFE; Tue, 27 Aug 2019 13:55:41 +0200 (CEST) Date: Tue, 27 Aug 2019 13:55:41 +0200 From: Christoph Hellwig To: Masahiro Yamada Subject: Re: [PATCH v2 2/2] dma-contiguous: Use fallback alloc_pages for single pages Message-ID: <20190827115541.GB5921@lst.de> References: <20190506223334.1834-1-nicoleotsuka@gmail.com> <20190506223334.1834-3-nicoleotsuka@gmail.com> <20190825011025.GA23410@lst.de> <20190826073320.GA11712@lst.de> <20190827075021.GA953@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Ulf Hansson , Tony Lindgren , Catalin Marinas , Will Deacon , Linux Kernel Mailing List , Max Filippov , Christoph Hellwig , Stephen Rothwell , Russell King , Thierry Reding , linux-xtensa@linux-xtensa.org, Kees Cook , Nicolin Chen , Andrew Morton , linux-arm-kernel , Chris Zankel , Wolfram Sang , Robin Murphy , linux-mmc , Adrian Hunter , iommu@lists.linux-foundation.org, iamjoonsoo.kim@lge.com, David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org On Tue, Aug 27, 2019 at 06:03:14PM +0900, Masahiro Yamada wrote: > Yes, this makes my driver working again > when CONFIG_DMA_CMA=y. > > > If I apply the following, my driver gets back working > irrespective of CONFIG_DMA_CMA. That sounds a lot like the device simply isn't 64-bit DMA capable, and previously always got CMA allocations under the limit it actually supported. I suggest that you submit this quirk to the mmc maintainers. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu