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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 10F9EC47082 for ; Tue, 8 Jun 2021 13:22:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED1D861278 for ; Tue, 8 Jun 2021 13:22:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232992AbhFHNYs (ORCPT ); Tue, 8 Jun 2021 09:24:48 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]:3176 "EHLO frasgout.his.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232771AbhFHNYr (ORCPT ); Tue, 8 Jun 2021 09:24:47 -0400 Received: from fraeml743-chm.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4FzrFF54Zzz6G8YM; Tue, 8 Jun 2021 21:10:09 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml743-chm.china.huawei.com (10.206.15.224) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 8 Jun 2021 15:22:53 +0200 Received: from localhost.localdomain (10.69.192.58) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 8 Jun 2021 14:22:49 +0100 From: John Garry To: , , , , CC: , , , , , , John Garry Subject: [PATCH v11 0/3] Enhance IOMMU default DMA mode build options Date: Tue, 8 Jun 2021 21:18:25 +0800 Message-ID: <1623158308-180604-1-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a reboot of Zhen Lei's series from a couple of years ago, which never made it across the line. I still think that it has some value, so taking up the mantle. Motivation: Allow lazy mode be default mode for DMA domains for all ARCHs, and not only those who hardcode it (to be lazy). For ARM64, currently we must use a kernel command line parameter to use lazy mode, which is less than ideal. Differences to v10: - Rebase to v5.13-rc4 - Correct comment and typo in Kconfig (Randy) - Make Kconfig choice depend on relevant architectures Differences to v9: https://lore.kernel.org/linux-iommu/20190613084240.16768-1-thunder.leizhen@huawei.com/#t - Rebase to v5.13-rc2 - Remove CONFIG_IOMMU_DEFAULT_PASSTHROUGH from choice: Since we can dynamically change default domain of group, lazy or strict and passthrough are not mutually exclusive - Drop ia64 patch, which I don't think was ever required - Drop "x86/dma: use IS_ENABLED() to simplify the code", which is no longer required - Drop s390/pci patch, as this arch does not use CONFIG_IOMMU_API or even already honour CONFIG_IOMMU_DEFAULT_PASSTHROUGH https://lore.kernel.org/linux-iommu/20190613084240.16768-4-thunder.leizhen@huawei.com/ - Drop powernv/iommu patch, as I no longer think that it is relevant https://lore.kernel.org/linux-iommu/20190613084240.16768-5-thunder.leizhen@huawei.com/ - Some tidying Zhen Lei (3): iommu: Enhance IOMMU default DMA mode build options iommu/vt-d: Add support for IOMMU default DMA mode build options iommu/amd: Add support for IOMMU default DMA mode build options drivers/iommu/Kconfig | 36 ++++++++++++++++++++++++++++++++++++ drivers/iommu/amd/init.c | 3 ++- drivers/iommu/intel/iommu.c | 2 +- drivers/iommu/iommu.c | 3 ++- 4 files changed, 41 insertions(+), 3 deletions(-) -- 2.26.2