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Tue, 25 Nov 2025 17:10:38 -0800 From: Nicolin Chen To: CC: , , , , , , , , , , , Subject: [PATCH v6 2/7] iommu/arm-smmu-v3: Add an inline arm_smmu_domain_free() Date: Tue, 25 Nov 2025 17:10:07 -0800 Message-ID: <271ea7ce11292aa8e51fbdf06f69e9a527e0bb3b.1764119291.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF000099D8:EE_|SJ5PPFF6E64BC2C:EE_ X-MS-Office365-Filtering-Correlation-Id: bc8f93ba-40d2-4efd-0014-08de2c88a7cc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?mlksDGBVWyxGjdk72DE/SXQG1bfyimmOa4GwHPX2a7aoTg3zO8l+Nc4tQjJH?= =?us-ascii?Q?dz75QXFTExwXttm1nhU5nI96UG6xhm0cPicxTqAsyeoVTREo+h52ztR1m4X/?= =?us-ascii?Q?sTLNYMsy9gMfAwVr1M/k2g3bCMyV+mkslvYSYLj0K4ekxLgLBfz0VSp/3PAo?= =?us-ascii?Q?lxZcnDoTMfsAcPIzdfdRsHyrD3+/48+es9UIWZA83mR9ulz+opvrL7WTKgxx?= =?us-ascii?Q?qhbV0aO2CwPtU3wsEgL82w0FIyxthIm0NkUs4XGvinO3DWVCbmW0LCX7p1QN?= =?us-ascii?Q?BE7ZztQbZv0SaMu0AR2jKKU/rUdPFa3oNxERuvv/HtyqPOAhLnBwpa/PGez/?= =?us-ascii?Q?0UiJWkY+xRWxxYfu6dJxZvHWz8PPA3PQmOGwPgsb2dNaiIpQm1gsynwvUk2F?= =?us-ascii?Q?FrY7XO2jrGZOF+z0TAztgx3kzS+TXKnaTnHnxgsLaBisDoZ2aaeRgtkkMZlx?= =?us-ascii?Q?R+DXNbNqUXe6u66Mip2TPnQj8PrbBUVh2v47/uOMiYrVyI/zciqF4ZbqAec2?= =?us-ascii?Q?dqYbqQdjrNXx0nvOvNN/gJE+AT83oXeD0rKZa+ylPd2CrR5h9BVpunroKggn?= =?us-ascii?Q?GA6wYsdncuk6OJj/RXxx0mrgHQziO019L6dOYcLhdo5qyAWKtwyK1X0Ri8px?= =?us-ascii?Q?iuxaeTck8lhUVGS4y086AwM1XU025JRR3snaQjHgp+jGxDlDDIuS+G01Igof?= =?us-ascii?Q?jKo6SQZPq5QY/aDUBvPYetW+Xbg8pI1PTb/DkUbbgZC4mh3uU/KXyeVUajmO?= =?us-ascii?Q?4Lhlv3EtYyZFlZrwXkGDAEmXFXvq1JaU98vRhB4+Lt6KRrxxW1Jvs9oy6aEi?= =?us-ascii?Q?0L3Ev00G7Y7IxuXbHOHzOVRVpxfSDPrALe0+9bD5ty0cZJIURVxXxoAH5f3/?= =?us-ascii?Q?UJiQtBwHDuK8xo+bV6VPNBahVTOCAcxwgVkGM5s+zoHh3j3ITNm0orN7s0UH?= =?us-ascii?Q?Oa4WD4pynLpfwFNjzUPWGqXFfIaYHqFs1E3CVaI1c350gwKVt3Pb3URbY19e?= =?us-ascii?Q?1LWYMhtoCBk2d0qTWlMbSsa3gQi4BubHb/8dYhnMkzCiiNNy3T89JBod4OrY?= =?us-ascii?Q?ujl+i5GgACmkL9Yox/b2Uqox9bG1IvD16GBd+hVWSljA/saMwyCnHDivw3Dp?= =?us-ascii?Q?pY0a2Fe3MqO24JTM5A/x/BUao1stAdJ824I9CHf+tqYvC6LiKShXCch+aDRr?= =?us-ascii?Q?A83hG1QMYYSt7wwKFEy6zjS32T4mrYNU09fb6XZ4p47pErqrYEEOTf+yWyTB?= =?us-ascii?Q?0n31xb3nhlDgGKhByolvPSzmZrhVqvbazMoX1V4bj1N/VR4eL2J8t2hrxuOt?= =?us-ascii?Q?OqaqA4k8op7NJX+PvrurKLkjeiKYwWc7OGBDaI6CaUdV6gJoKAts6rgKNrDR?= =?us-ascii?Q?2qfdN+m0Ss8soGfEI0gsKPvsXaW02C0ez/orDrnLNH52zu97kF1WzO0E1I39?= =?us-ascii?Q?EeO20FUotkxJ8XlTfEh1VWndnyoVkghF19NnYZXf/8d0VE42Y/1UwYeozoH9?= =?us-ascii?Q?3TtzK14PHU+u9DGEyKZPEzhu/y/btmuLlTPg+hbkJIufMljRxngoC6jH749v?= =?us-ascii?Q?i6lLRI0LE3JVA3y3TV0=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(1800799024)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Nov 2025 01:10:57.4108 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bc8f93ba-40d2-4efd-0014-08de2c88a7cc X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF000099D8.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ5PPFF6E64BC2C Content-Type: text/plain; charset="utf-8" There will be a bit more things to free than smmu_domain itself. So keep a simple inline function in the header to share aross files. Suggested-by: Jason Gunthorpe Reviewed-by: Jason Gunthorpe Acked-by: Balbir Singh Signed-off-by: Nicolin Chen --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 5 +++++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 5 +++-- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 4 ++-- 3 files changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/ar= m/arm-smmu-v3/arm-smmu-v3.h index 5c0b38595d20..96a23ca633cb 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -954,6 +954,11 @@ extern struct mutex arm_smmu_asid_lock; =20 struct arm_smmu_domain *arm_smmu_domain_alloc(void); =20 +static inline void arm_smmu_domain_free(struct arm_smmu_domain *smmu_domai= n) +{ + kfree(smmu_domain); +} + void arm_smmu_clear_cd(struct arm_smmu_master *master, ioasid_t ssid); struct arm_smmu_cd *arm_smmu_get_cd_ptr(struct arm_smmu_master *master, u32 ssid); diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iomm= u/arm/arm-smmu-v3/arm-smmu-v3-sva.c index 6097f1f540d8..440ad8cc07de 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -197,7 +197,8 @@ static void arm_smmu_mm_release(struct mmu_notifier *mn= , struct mm_struct *mm) =20 static void arm_smmu_mmu_notifier_free(struct mmu_notifier *mn) { - kfree(container_of(mn, struct arm_smmu_domain, mmu_notifier)); + arm_smmu_domain_free( + container_of(mn, struct arm_smmu_domain, mmu_notifier)); } =20 static const struct mmu_notifier_ops arm_smmu_mmu_notifier_ops =3D { @@ -365,6 +366,6 @@ struct iommu_domain *arm_smmu_sva_domain_alloc(struct d= evice *dev, err_asid: xa_erase(&arm_smmu_asid_xa, smmu_domain->cd.asid); err_free: - kfree(smmu_domain); + arm_smmu_domain_free(smmu_domain); return ERR_PTR(ret); } diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/ar= m/arm-smmu-v3/arm-smmu-v3.c index 9d9f24a08062..e9759e8af0c0 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2492,7 +2492,7 @@ static void arm_smmu_domain_free_paging(struct iommu_= domain *domain) ida_free(&smmu->vmid_map, cfg->vmid); } =20 - kfree(smmu_domain); + arm_smmu_domain_free(smmu_domain); } =20 static int arm_smmu_domain_finalise_s1(struct arm_smmu_device *smmu, @@ -3359,7 +3359,7 @@ arm_smmu_domain_alloc_paging_flags(struct device *dev= , u32 flags, return &smmu_domain->domain; =20 err_free: - kfree(smmu_domain); + arm_smmu_domain_free(smmu_domain); return ERR_PTR(ret); } =20 --=20 2.43.0