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Fri, 9 Jun 2023 05:52:31 -0500 From: Vasant Hegde To: , CC: , , , Vasant Hegde Subject: [PATCH v2 2/2] iommu/amd/iommu_v2: Clear pasid state in free path Date: Fri, 9 Jun 2023 10:51:46 +0000 Message-ID: <20230609105146.7773-3-vasant.hegde@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230609105146.7773-1-vasant.hegde@amd.com> References: <20230609105146.7773-1-vasant.hegde@amd.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044F3:EE_|MN2PR12MB4319:EE_ X-MS-Office365-Filtering-Correlation-Id: cb270d4f-23ec-498a-ea0a-08db68d7a1dc 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(376002)(346002)(396003)(39860400002)(136003)(451199021)(40470700004)(36840700001)(46966006)(70586007)(7696005)(4744005)(6666004)(81166007)(2906002)(82740400003)(356005)(70206006)(54906003)(110136005)(44832011)(8676002)(5660300002)(36756003)(86362001)(8936002)(4326008)(316002)(40480700001)(478600001)(41300700001)(40460700003)(336012)(2616005)(82310400005)(26005)(1076003)(186003)(426003)(36860700001)(47076005)(16526019)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2023 10:52:34.4517 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cb270d4f-23ec-498a-ea0a-08db68d7a1dc X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000044F3.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4319 Clear pasid state in device amd_iommu_free_device() path. It will make sure no new ppr notifier is registered in free path. Suggested-by: Jason Gunthorpe Signed-off-by: Vasant Hegde --- drivers/iommu/amd/iommu_v2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c index 858748baae0b..1df1d227bd26 100644 --- a/drivers/iommu/amd/iommu_v2.c +++ b/drivers/iommu/amd/iommu_v2.c @@ -327,6 +327,9 @@ static void free_pasid_states(struct device_state *dev_state) put_pasid_state(pasid_state); + /* Clear the pasid state so that the pasid can be re-used */ + clear_pasid_state(dev_state, pasid_state->pasid); + /* * This will call the mn_release function and * unbind the PASID -- 2.31.1