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Tue, 17 Mar 2026 00:59:33 -0700 From: Nicolin Chen To: CC: , , , , , , , , , , , , , , , , Subject: [PATCH v13 3/8] iommu/arm-smmu-v3: Add an inline arm_smmu_domain_free() Date: Tue, 17 Mar 2026 00:59:18 -0700 Message-ID: <8f4a7064b5f41a7caa9db0740a9003bee88cd7ec.1773733797.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: SJ1PEPF00001CE8:EE_|BN5PR12MB9487:EE_ X-MS-Office365-Filtering-Correlation-Id: f6834d94-0b7e-486c-7bff-08de83fb2943 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700016|376014|7416014|1800799024|56012099003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 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)(82310400026)(36860700016)(376014)(7416014)(1800799024)(56012099003)(22082099003)(18002099003);DIR:OUT;SFP:1101; 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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 Reviewed-by: Pranjal Shrivastava 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 24894b1630045..cfbedb76c8baa 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -956,6 +956,11 @@ 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 6097f1f540d87..440ad8cc07de2 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 117979c96b762..375f2143efc1d 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2559,7 +2559,7 @@ 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, @@ -3427,7 +3427,7 @@ 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