From patchwork Mon Jun 6 06:19:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 12870017 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E785ECCA483 for ; Mon, 6 Jun 2022 06:20:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229863AbiFFGUV (ORCPT ); Mon, 6 Jun 2022 02:20:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229890AbiFFGUD (ORCPT ); Mon, 6 Jun 2022 02:20:03 -0400 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (mail-bn8nam11on2045.outbound.protection.outlook.com [40.107.236.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3CDE121E0B; Sun, 5 Jun 2022 23:19:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=cndKJOiJd90tXzm/yOg6GgkNavKUiAMwfv6bOIysihopzc6Xshv8wMsgzqF6osS5xme/1+MVhBtlikayvzg59nZTWZsRp1s5vA8sC26PBKE2y/V68Sb58noh+YIO5DyS+qXeXk7BXOg/0qGxddOGR0i2FoJRa12+MbBCXYdlVyKZEyO22ITepK6UkpILoW0Ngau1fhLIdGM2dbCtwgxNn3uhZ5p76I/9DveLemrCyLjBLexgrKcs4kI89TNhjfR8A1AjU/SfX+Bwflor3TqyMsL6XXAWIsjV3QroTzhHxAlw//GVtz/S3NUJI3ProPlTUYIgWN+5+YcGoguDwM0tsw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=qt61BEzWAJnf/jjYQPs/mf5a7J0wxbd8tUu1/z9I+ro=; b=Fhmg/hcS/GKTVHdJa67QBMwxlUs8EK1td39cjXNGOo5FTqwtB2SaSPYlZ1vehE9JaCe4eFRfEcmL7PrOizvqkbL25NCOHOh3i2Dc5qGOcaFSjYVzrOGQ6gvHXY25hygY/JGcZNjiQ0sPSDXirt5SP0iDkWZ8YxHiG9gAZmAHXKade9yfXPJyztfT0NTBFXhE5465t4VbBzP8B2kdpbttM2gaaCLQN0h0goqzDjntt9bOfSm9a68AzoEa8RORI7LMySH3X6hPG8/GE17wwNqOzslBX3qncp6LaTiTIXxDNvfMYWJf86NFE+LRHwfBUWttNy2Smz5n7MWaHBnui/TwhA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 12.22.5.236) smtp.rcpttodomain=samsung.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qt61BEzWAJnf/jjYQPs/mf5a7J0wxbd8tUu1/z9I+ro=; b=pZhCEki/WrrDNL6nzAhWkMes+eXnm7eBIhNmnUDuvd8VQ/Lwy7bvo21V8SnWQyH4Zu7dIGoeA2CGzq9jNc3OWhn824TDsFVDGWFUK76ylUq4aMYWZN5DAmWOBrh2335ZCzV3Iv+brkY0+2lolWQPCcAMgQgN5I+66IypBIHg2DYu1plzvA05XuYxI9dz7QLIVlKuiBipWVpb7CDyBjC4w9jstfdhwR/YZVyDR8tK1BWMK2mDhWhjYkTOcSRikSqNObdYZg5B131hHqVsf4SHVpH3yAXSo+ZV55wb9GXUxUFbRSyLs8hunfEBtXUjOnV3T13lJI2sk8pFwZv+Ds13Gg== Received: from MW4PR03CA0182.namprd03.prod.outlook.com (2603:10b6:303:b8::7) by DM6PR12MB2890.namprd12.prod.outlook.com (2603:10b6:5:15e::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5314.18; Mon, 6 Jun 2022 06:19:53 +0000 Received: from CO1NAM11FT018.eop-nam11.prod.protection.outlook.com (2603:10b6:303:b8:cafe::5a) by MW4PR03CA0182.outlook.office365.com (2603:10b6:303:b8::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5314.12 via Frontend Transport; Mon, 6 Jun 2022 06:19:53 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 12.22.5.236) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 12.22.5.236 as permitted sender) receiver=protection.outlook.com; client-ip=12.22.5.236; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (12.22.5.236) by CO1NAM11FT018.mail.protection.outlook.com (10.13.175.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.5314.12 via Frontend Transport; Mon, 6 Jun 2022 06:19:52 +0000 Received: from rnnvmail204.nvidia.com (10.129.68.6) by DRHQMAIL109.nvidia.com (10.27.9.19) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Mon, 6 Jun 2022 06:19:52 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by rnnvmail204.nvidia.com (10.129.68.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sun, 5 Jun 2022 23:19:51 -0700 Received: from Asurada-Nvidia.nvidia.com (10.127.8.12) by mail.nvidia.com (10.129.68.10) with Microsoft SMTP Server id 15.2.986.22 via Frontend Transport; Sun, 5 Jun 2022 23:19:49 -0700 From: Nicolin Chen To: , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH 0/5] Simplify vfio_iommu_type1 attach/detach routine Date: Sun, 5 Jun 2022 23:19:22 -0700 Message-ID: <20220606061927.26049-1-nicolinc@nvidia.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 398b826b-ed06-426d-5c5f-08da47849165 X-MS-TrafficTypeDiagnostic: DM6PR12MB2890:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.236;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230001)(4636009)(40470700004)(36840700001)(46966006)(336012)(47076005)(1076003)(2616005)(426003)(36756003)(7416002)(6666004)(83380400001)(966005)(186003)(7696005)(36860700001)(26005)(81166007)(110136005)(40460700003)(8936002)(921005)(356005)(316002)(82310400005)(4326008)(508600001)(86362001)(8676002)(5660300002)(54906003)(70206006)(70586007)(2906002)(7406005)(83996005)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jun 2022 06:19:52.5847 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 398b826b-ed06-426d-5c5f-08da47849165 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.236];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT018.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB2890 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org This is a preparatory series for IOMMUFD v2 patches. It enforces error code -EMEDIUMTYPE in iommu_attach_device() and iommu_attach_group() when an IOMMU domain and a device/group are incompatible. It also moves the domain->ops check into __iommu_attach_device(). These allow VFIO iommu code to simplify its group attachment routine, by avoiding the extra IOMMU domain allocations and attach/detach sequences of the old code. Worths mentioning the exact match for enforce_cache_coherency is removed with this series, since there's very less value in doing that since KVM won't be able to take advantage of it -- this just wastes domain memory. Instead, we rely on Intel IOMMU driver taking care of that internally. This is on github: https://github.com/nicolinc/iommufd/commits/vfio_iommu_attach Jason Gunthorpe (1): vfio/iommu_type1: Prefer to reuse domains vs match enforced cache coherency Nicolin Chen (4): iommu: Return -EMEDIUMTYPE for incompatible domain and device/group iommu: Ensure device has the same iommu_ops as the domain vfio/iommu_type1: Clean up update_dirty_scope in detach_group() vfio/iommu_type1: Simplify group attachment drivers/iommu/amd/iommu.c | 3 +- drivers/iommu/apple-dart.c | 5 +- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 7 +- drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 + drivers/iommu/arm/arm-smmu/qcom_iommu.c | 3 +- drivers/iommu/exynos-iommu.c | 1 + drivers/iommu/fsl_pamu_domain.c | 1 + drivers/iommu/intel/iommu.c | 5 +- drivers/iommu/iommu.c | 26 ++ drivers/iommu/ipmmu-vmsa.c | 3 +- drivers/iommu/msm_iommu.c | 1 + drivers/iommu/mtk_iommu.c | 1 + drivers/iommu/mtk_iommu_v1.c | 1 + drivers/iommu/omap-iommu.c | 3 +- drivers/iommu/rockchip-iommu.c | 1 + drivers/iommu/s390-iommu.c | 1 + drivers/iommu/sprd-iommu.c | 1 + drivers/iommu/sun50i-iommu.c | 1 + drivers/iommu/tegra-gart.c | 1 + drivers/iommu/tegra-smmu.c | 1 + drivers/iommu/virtio-iommu.c | 3 +- drivers/vfio/vfio_iommu_type1.c | 315 ++++++++++---------- include/linux/iommu.h | 2 + 23 files changed, 223 insertions(+), 164 deletions(-)