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=-6.7 required=3.0 tests=BAYES_00, 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 2F6C3C4363A for ; Wed, 28 Oct 2020 07:04:01 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 3073C22258 for ; Wed, 28 Oct 2020 07:03:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3073C22258 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4CLfgd75JHzDqTW for ; Wed, 28 Oct 2020 18:03:57 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.ru (client-ip=107.174.27.60; helo=ozlabs.ru; envelope-from=aik@ozlabs.ru; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru Received: from ozlabs.ru (ozlabs.ru [107.174.27.60]) by lists.ozlabs.org (Postfix) with ESMTP id 4CLfbs6P1rzDqLP for ; Wed, 28 Oct 2020 18:00:39 +1100 (AEDT) Received: from fstn1-p1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id ED6EFAE80273; Wed, 28 Oct 2020 02:59:51 -0400 (EDT) From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH kernel v3 0/2] DMA, powerpc/dma: Fallback to dma_ops when persistent memory present Date: Wed, 28 Oct 2020 18:00:28 +1100 Message-Id: <20201028070030.60643-1-aik@ozlabs.ru> X-Mailer: git-send-email 2.17.1 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexey Kardashevskiy , iommu@lists.linux-foundation.org, Christoph Hellwig , linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This allows mixing direct DMA (to/from RAM) and IOMMU (to/from apersistent memory) on the PPC64/pseries platform. This replaces https://lkml.org/lkml/2020/10/27/418 which replaces https://lkml.org/lkml/2020/10/20/1085 This is based on sha1 4525c8781ec0 Linus Torvalds "scsi: qla2xxx: remove incorrect sparse #ifdef". Please comment. Thanks. Alexey Kardashevskiy (2): dma: Allow mixing bypass and mapped DMA operation powerpc/dma: Fallback to dma_ops when persistent memory present arch/powerpc/kernel/dma-iommu.c | 70 +++++++++++++++++++++++++- arch/powerpc/platforms/pseries/iommu.c | 44 ++++++++++++---- kernel/dma/mapping.c | 24 +++++++-- arch/powerpc/Kconfig | 1 + kernel/dma/Kconfig | 4 ++ 5 files changed, 127 insertions(+), 16 deletions(-) -- 2.17.1