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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 322F2C76191 for ; Thu, 25 Jul 2019 06:34:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 0B92321901 for ; Thu, 25 Jul 2019 06:34:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Vrshq2Fm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B92321901 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=tOpBZP+bXadGRc22DG21YqLQAWNH9RVQfRicnioGDRQ=; b=Vrshq2Fm1NI+PN hgCZc9XgOFmOa4+Khf724N9+D1xtZE2kbtO7B0oarlarEaeGeJLCimTQg6pNnit8+/5GtpnT1ZaPT syyYIAbdwFOvycEu2Fz0ln0nKyX1D1bSb/KRLw/kNTuC3lh5CEiUKTqNjVjbnF13R1LVJ+MkTC4VT vI0jx0Q1YXMoypz7Jtdu1X+L5OWsEhMUPy4hCxhZw0N+9tLxmmLQp/+szNhw4XXLqSu1+eCtv7Wio zk5DE75W62lvorkTCUtDZbVUvv3ma5i12+zV2Lq429sfJi8IrvRZrFqTLccuwn+JLzXpyBuNL1W+G Q7w4RuxZvgFxQSK1Y4XQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hqXKL-0000GH-6B; Thu, 25 Jul 2019 06:34:09 +0000 Received: from p57b3f613.dip0.t-ipconnect.de ([87.179.246.19] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hqXKH-0000FL-DN; Thu, 25 Jul 2019 06:34:05 +0000 From: Christoph Hellwig To: iommu@lists.linux-foundation.org, Marek Szyprowski Subject: remove default fallbacks in dma_map_ops Date: Thu, 25 Jul 2019 08:33:56 +0200 Message-Id: <20190725063401.29904-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-xtensa@linux-xtensa.org, Michal Simek , linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, Takashi Iwai , linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, Robin Murphy , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi all, we have a few places where the DMA mapping layer has non-trivial default actions that are questionable and/or dangerous. This series instead wires up the mmap, get_sgtable and get_required_mask methods explicitly and cleans up some surrounding areas. This also means we could get rid of the ARCH_NO_COHERENT_DMA_MMAP kconfig option, as we now require a mmap method wired up, or in case of non-coherent dma-direct the presence of the arch_dma_coherent_to_pfn hook. The only interesting case is that the sound code also checked the ARCH_NO_COHERENT_DMA_MMAP symbol in somewhat odd ways, so I'd like to see a review of the sound situation before going forward with that patch. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel