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Wed, 17 Dec 2025 15:24:46 -0800 From: Nicolin Chen To: CC: , , , , , , , , , , , Subject: [PATCH v8 2/7] iommu/arm-smmu-v3: Add an inline arm_smmu_domain_free() Date: Wed, 17 Dec 2025 15:24:27 -0800 Message-ID: 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: CH2PEPF00000144:EE_|CY1PR12MB9651:EE_ X-MS-Office365-Filtering-Correlation-Id: 7f270d09-f832-4a7a-25de-08de3dc38227 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|36860700013|1800799024|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?XJ9yqmxW7WEkQvR9C2kT/cjMW4u3FBoLwUTV59mKm18qev3tlmKkWjUGLoU+?= =?us-ascii?Q?rCiiiehNeX/uEeo60NlAAz7xmPR5QYJjvGHqOQOSREZ1hWBX84mpfR3J/KH3?= =?us-ascii?Q?6ZcCqUXkbmqC3fUTHc0SCkPT31zRizYcQGb0gw1t3s8uf+GwjD2TVkSaRogE?= =?us-ascii?Q?0XYsc26DDuPGvBuJgma0mivh7d2o0TrPUNzbLsVS+eeA6P6KNtzslHylwCrG?= =?us-ascii?Q?QkOinBhZk4Q+BBXlEvnzNfAJ28/YE63g7Upnl3S+1KecNQw+Dt3P9joZIazL?= =?us-ascii?Q?HgCbsi3LSz9A27VLnl5Lmy5VEC8u+nI3hG8V2poh5qnWamaCM0jaUSFD1dGX?= =?us-ascii?Q?CCMA/80TbGyxUJtLH5Tc1F1EQrZP6/uiuXlNYRyByC9n0Eqz10AuAhR4kKWB?= =?us-ascii?Q?mi/p9zY+UFz2KBvjrBjZA36+FcjnP+tdFTtHXqzdMm6FlMrcwWiaQoY3qRXx?= =?us-ascii?Q?IwH3DSC5qUp3UIBY99xRC8CZTm6IDYewNqOx6EmOhBcHwp/FqguheZqh40EB?= =?us-ascii?Q?H6OAw6IrjDk7GZcxwOD50L89H3Ath276NY/ZKGeAwWk2ccdESGaiugVGklaj?= =?us-ascii?Q?TaFmFPsar0AD5Kz2AAw0J5VMd4PEOHWDQ5pVSLXdALbwxbKLXWoWg8FYhS/5?= =?us-ascii?Q?zjrVZMA/CAe37obuDgn+U7yk4nyQ5jrcojDA71UKv63mx4yPPS6VLd/LH1Z2?= =?us-ascii?Q?oQROW7fGSACx+DvKx/YprmB8aG+fhsgaJUl6kjjB4r9a/yl7YM70gDn5gnCN?= =?us-ascii?Q?ChLelmGLtO42dpsG+bH3oa6tIikiEQE2McQJBZvitocD8tR3at8qhP8MV0xv?= =?us-ascii?Q?TYvZkKIzzEDZRbo7jHYiRZKZo/2sV8Kk1nt1fYUyfNaGhamUMriaBNQy1RFZ?= =?us-ascii?Q?5wte3gUf8+LS4tF/SyBHysRYd9BtR180O+AxFPa5ouZSUtzT9KWg0B9THNCC?= =?us-ascii?Q?xZ3C5SB1kZ5KPKZCTDVrgQjuxvhOlux18h0rIBcBd/cHEOVNBkepEZN0L8ji?= =?us-ascii?Q?8dRwRdV9FjoVBaGJMwbsM0UaMpYI/4wlSlpOjnDmeaqkMHSb6vYExN4mTKgo?= =?us-ascii?Q?J0qS23RyPnc1Ulb1oacvWXDMzU61nIw3OnepJQqe+cQZKHpuBpj4mrICCt1Y?= =?us-ascii?Q?advbfmBW3NCYD5kwe6GMHDX/h22p9B7cmRTOzKt5buKcpBwHN/+EstL7d4oH?= =?us-ascii?Q?h0tDBXx8Q5MJDhfM1DlN8Z9z/hwLRmHOcorEntx/CWd9DYsdvC2LzocPxHaX?= =?us-ascii?Q?Gygfsqnna8zjx3AlCipqmADM1ZowKmtqVpTYWvvyxWjaG3zlzYEsp5mb1iDM?= =?us-ascii?Q?8+YdtzM2Dl2F+u0Ri6xu2fVvtxY1RlbwVOXPEORsf23deko1Hf/6jA+U86t2?= =?us-ascii?Q?EQsBojQcKEK3Ep5lTbvQI9wHecwR+qBv1apVE8aZ77UP0Xm4+uMKqI6OV6Bw?= =?us-ascii?Q?81FOz8ROHmEOeIFi19xVCzSEyZSopFzybLw0sxyc5TTbxmY9pn9JFH8vW6F2?= =?us-ascii?Q?rABt1JVo811R6fgg1J36DnLR/TYlSQqowazvT9lT+3vLQH6RCkQXKNMJxbpl?= =?us-ascii?Q?HHVtzFD86mMfzDbGM8U=3D?= 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:(13230040)(376014)(7416014)(36860700013)(1800799024)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Dec 2025 23:25:04.3088 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7f270d09-f832-4a7a-25de-08de3dc38227 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: CH2PEPF00000144.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR12MB9651 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