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 16609C2D0A3 for ; Wed, 4 Nov 2020 03:55:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE35622264 for ; Wed, 4 Nov 2020 03:55:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728420AbgKDDzE (ORCPT ); Tue, 3 Nov 2020 22:55:04 -0500 Received: from ozlabs.ru ([107.174.27.60]:41794 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726008AbgKDDzE (ORCPT ); Tue, 3 Nov 2020 22:55:04 -0500 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 Cc: Christoph Hellwig , Michael Ellerman , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Alexey Kardashevskiy 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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