From patchwork Thu Jun 16 00:02:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 12883117 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5AE49CCA473 for ; Thu, 16 Jun 2022 00:03:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=j9qe5GyGJkoJT4N85UUxHSJo8/UuOJlxedrgg+sXxBA=; b=BhaAc6XSrjo+5VtavOjZ5+d4No 9CEy7CRGlSFZngkTCrHg+kpMuS/2O2cQEDOlJi7CAnTzir+oZ+6nItH0egxeISAOE4/kmQ/DinLSg 40NhwvxbzFHo86YPVw9qq0FXdSXDJtFFTEtvN9tmJKJns3utnoVGLPkRCLmkF7OiDYesheeawKOI1 dwLRx1ssuSe0+e5Lj5IU+3S/pTO2kvwlrCbQXmDPV2nKhQPYNJQKGXPFkjJg6jLnCo1Uce2HkOMZc ylgACZNU7GqLoM9D2m6r+eLAH9MNtVOTG7M1Z+bmc5jw0I26emW265H0+YT+kMXkgfrnqQIQ1Lr6Y n1rwRmKg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1cyw-00H1oY-4g; Thu, 16 Jun 2022 00:03:30 +0000 Received: from mail-mw2nam12on20626.outbound.protection.outlook.com ([2a01:111:f400:fe5a::626] helo=NAM12-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1cyi-00H1hX-Rq; Thu, 16 Jun 2022 00:03:18 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AMq+I0d+rv6DWK5+5MjKM8t7O+Nm+jW4m3qqF/ZowqEylM46rIxJH21BfiwPpPGIWHCcwyZuw6x70xvJj+SSBE8gO634aKu9Fi17THEtKBAeMcMMFi3CdplsEpWgfEWrv0foJgwHrl3arw1fL2ZQ/h7FoQntOekgd7rmdhwqaLPt44XR8kYtrsWV8G3ElAHWBfssVr955swKF//ouAEhoIt3ioxRSfCJlfGT46bcRbB7vT1d0bKlBZQ7AWf9y8XallflzAE01q3AOeT3tst/zgZ6Ot66qrehUckPEMLTN7hX55NePHuO2MUoYyInzahTheSJMQf7mus+djZtbnE8Sg== 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=j9qe5GyGJkoJT4N85UUxHSJo8/UuOJlxedrgg+sXxBA=; b=Bt6oYtCVnrkmdEPocaB8ZERwdLQJfCKvQgkkJ2iOeF1mCamawXGPAZAg9NuUBDgpnZqQnJNqj4IlTrn7ePyrPZnQbNlLXfboPEcKIkXJzduqskvjbZnjewgsfbUiNxfSBZPEj0M9VF8jfYOdoR3+XTtBtdh9NY03LKBE6UveoRMDAoIkJ8cRBP22f1xgqQRy8b+MzQyppvUrWDSl2x9LYRkM0/cIMw5ylgE7O3BFtSCSgHCmTmXqazNs1MiAazo7l+Qf2MrPKjXgpuZiR5yQsgTRt3wqTbaxMwSkrlpW2FRohq5pORTg50lYXtKKHMkE3rt9+1LNYaW2s/6RySM3ag== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 12.22.5.236) smtp.rcpttodomain=linux.intel.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=j9qe5GyGJkoJT4N85UUxHSJo8/UuOJlxedrgg+sXxBA=; b=iklFvp/DWW+EG3fkjCu5jNiwyB8NV9b90FOutlU00OdPpe7t1oQN7YHA/gYCnnQBL22beSrCtEU6fX0hhc1R2vTpg3/27xD3ajaGFhyMXqWelfZFir7IxdYO4X0QnkdA8Lw2/Sk+0xcdukFIxipMqfQ4Gh+pjbla/XA+xAUA7Fk2uvbFZnQHrJT40+Q4eUtPF+MKOnltHYNpneOE+5GeCFAamUEub82CjmDHWuX4lNmm836AJPSj8IHvgwxAEJRUto+gH3q6FeXPpEfWGif/XxhborHRYYlzKyo7fj1d/R9JQmMsq2OxqS1oTpwpbdPmB+asIWCjwtEukA1vBO8dvA== Received: from MWHPR19CA0079.namprd19.prod.outlook.com (2603:10b6:320:1f::17) by MW3PR12MB4571.namprd12.prod.outlook.com (2603:10b6:303:5c::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5332.16; Thu, 16 Jun 2022 00:03:11 +0000 Received: from CO1NAM11FT013.eop-nam11.prod.protection.outlook.com (2603:10b6:320:1f:cafe::b2) by MWHPR19CA0079.outlook.office365.com (2603:10b6:320:1f::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5353.14 via Frontend Transport; Thu, 16 Jun 2022 00:03:11 +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 CO1NAM11FT013.mail.protection.outlook.com (10.13.174.227) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.5332.12 via Frontend Transport; Thu, 16 Jun 2022 00:03:11 +0000 Received: from drhqmail202.nvidia.com (10.126.190.181) by DRHQMAIL109.nvidia.com (10.27.9.19) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Thu, 16 Jun 2022 00:03:10 +0000 Received: from drhqmail201.nvidia.com (10.126.190.180) by drhqmail202.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 15 Jun 2022 17:03:10 -0700 Received: from Asurada-Nvidia.nvidia.com (10.127.8.11) by mail.nvidia.com (10.126.190.180) with Microsoft SMTP Server id 15.2.986.22 via Frontend Transport; Wed, 15 Jun 2022 17:03:08 -0700 From: Nicolin Chen To: , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v2 0/5] Simplify vfio_iommu_type1 attach/detach routine Date: Wed, 15 Jun 2022 17:02:59 -0700 Message-ID: <20220616000304.23890-1-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: 38d382b3-0dd0-492b-deb6-08da4f2b9a1a X-MS-TrafficTypeDiagnostic: MW3PR12MB4571: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:(13230016)(4636009)(46966006)(36840700001)(40470700004)(426003)(6666004)(336012)(7696005)(316002)(110136005)(5660300002)(54906003)(36756003)(82310400005)(7406005)(83380400001)(7416002)(47076005)(70586007)(2906002)(40460700003)(70206006)(86362001)(8936002)(81166007)(356005)(966005)(4326008)(921005)(1076003)(36860700001)(2616005)(186003)(26005)(508600001)(8676002)(2101003)(36900700001)(83996005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2022 00:03:11.2736 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 38d382b3-0dd0-492b-deb6-08da4f2b9a1a 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: CO1NAM11FT013.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4571 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_170316_948301_53487AF8 X-CRM114-Status: GOOD ( 12.43 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.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 drops the useless domain->ops check since it won't fail in current environment. 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 Changelog v2: * Added -EMEDIUMTYPE to more IOMMU drivers that fit the category. * Changed dev_err to dev_dbg for -EMEDIUMTYPE to avoid kernel log spam. * Dropped iommu_ops patch, and removed domain->ops in VFIO directly, since there's no mixed-driver use case that would fail the sanity. * Updated commit log of the patch removing enforce_cache_coherency. * Fixed a misplace of "num_non_pinned_groups--" in detach_group patch. * Moved "num_non_pinned_groups++" in PATCH-5 to the common path between domain-reusing and new-domain pathways, like the code previously did. * Fixed a typo in EMEDIUMTYPE patch. v1: https://lore.kernel.org/kvm/20220606061927.26049-1-nicolinc@nvidia.com/ 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 vfio/iommu_type1: Remove the domain->ops comparison vfio/iommu_type1: Clean up update_dirty_scope in detach_group() vfio/iommu_type1: Simplify group attachment drivers/iommu/amd/iommu.c | 2 +- drivers/iommu/apple-dart.c | 4 +- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 12 +- drivers/iommu/arm/arm-smmu/arm-smmu.c | 4 +- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 4 +- drivers/iommu/intel/iommu.c | 6 +- drivers/iommu/iommu.c | 28 ++ drivers/iommu/ipmmu-vmsa.c | 4 +- drivers/iommu/mtk_iommu_v1.c | 2 +- drivers/iommu/omap-iommu.c | 4 +- drivers/iommu/s390-iommu.c | 2 +- drivers/iommu/sprd-iommu.c | 4 +- drivers/iommu/tegra-gart.c | 2 +- drivers/iommu/virtio-iommu.c | 4 +- drivers/vfio/vfio_iommu_type1.c | 317 ++++++++++---------- 15 files changed, 220 insertions(+), 179 deletions(-)