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Fri, 27 Jan 2023 12:04:56 -0800 From: Nicolin Chen To: , , , , , , , , , , , , CC: , , , , , , , , Subject: [PATCH 2/4] iommu/dma: Do not init domain if broken_unmanaged_domain Date: Fri, 27 Jan 2023 12:04:18 -0800 Message-ID: <451e7beb57ec6de66ee0da5b38886105436f53d7.1674849118.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT112:EE_|DM6PR12MB4417:EE_ X-MS-Office365-Filtering-Correlation-Id: e581f0a5-0c46-48b6-6296-08db00a1ca63 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:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230025)(4636009)(376002)(39860400002)(346002)(396003)(136003)(451199018)(40470700004)(36840700001)(46966006)(2906002)(5660300002)(7416002)(4744005)(41300700001)(36860700001)(426003)(47076005)(6666004)(26005)(8936002)(336012)(186003)(478600001)(2616005)(70206006)(36756003)(356005)(40460700003)(82740400003)(921005)(7636003)(70586007)(86362001)(316002)(4326008)(40480700001)(7696005)(8676002)(82310400005)(54906003)(110136005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2023 20:05:08.6271 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e581f0a5-0c46-48b6-6296-08db00a1ca63 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT112.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4417 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add a sanity of the broken_unmanaged_domain flag to reject the use of dma-iommu in the early stage, if the flag is set by the iommu driver. Suggested-by: Jason Gunthorpe Signed-off-by: Nicolin Chen --- drivers/iommu/dma-iommu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index f798c44e0903..f1e8d952b17d 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -545,6 +545,9 @@ static int iommu_dma_init_domain(struct iommu_domain *d= omain, dma_addr_t base, if (!cookie || cookie->type !=3D IOMMU_DMA_IOVA_COOKIE) return -EINVAL; =20 + if (WARN_ON(!device_iommu_unmanaged_supported(dev))) + return -EINVAL; + iovad =3D &cookie->iovad; =20 /* Use the smallest supported page size for IOVA granularity */ --=20 2.39.1