diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2024-04-24 15:16:44 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-04-26 11:57:49 +0200 |
| commit | 886f816c2f01f768384e78f91b3c0ff66920b53f (patch) | |
| tree | 3bf7566937ab9f030c0459d6f76b5f8e3d63771d /drivers/iommu/intel/iommu.h | |
| parent | 65442507026a79e2de8014880e6ba376b8b44584 (diff) | |
| download | linux-886f816c2f01f768384e78f91b3c0ff66920b53f.tar.gz linux-886f816c2f01f768384e78f91b3c0ff66920b53f.tar.bz2 linux-886f816c2f01f768384e78f91b3c0ff66920b53f.zip | |
iommu/vt-d: Remove struct intel_svm
The struct intel_svm was used for keeping attached devices info for sva
domain. Since sva domain is a kind of iommu_domain, the struct
dmar_domain should centralize all info of a sva domain, including the
info of attached devices. Therefore, retire struct intel_svm and clean up
the code.
Besides, register mmu notifier callback in domain_alloc_sva() callback
which allows the memory management notifier lifetime to follow the lifetime
of the iommu_domain. Call mmu_notifier_put() in the domain free and defer
the real free to the mmu free_notifier callback.
Co-developed-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240416080656.60968-13-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/iommu.h')
| -rw-r--r-- | drivers/iommu/intel/iommu.h | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h index f16b0d10543f..c9eef464cf5c 100644 --- a/drivers/iommu/intel/iommu.h +++ b/drivers/iommu/intel/iommu.h @@ -648,8 +648,12 @@ struct dmar_domain { /* link to parent domain siblings */ struct list_head s2_link; }; + + /* SVA domain */ + struct { + struct mmu_notifier notifier; + }; }; - struct intel_svm *svm; struct iommu_domain domain; /* generic domain data structure for iommu core */ @@ -1149,26 +1153,16 @@ int intel_svm_enable_prq(struct intel_iommu *iommu); int intel_svm_finish_prq(struct intel_iommu *iommu); void intel_svm_page_response(struct device *dev, struct iopf_fault *evt, struct iommu_page_response *msg); -struct iommu_domain *intel_svm_domain_alloc(void); -void intel_svm_remove_dev_pasid(struct iommu_domain *domain); +struct iommu_domain *intel_svm_domain_alloc(struct device *dev, + struct mm_struct *mm); void intel_drain_pasid_prq(struct device *dev, u32 pasid); - -struct intel_svm { - struct mmu_notifier notifier; - struct mm_struct *mm; - u32 pasid; - struct dmar_domain *domain; -}; #else static inline void intel_svm_check(struct intel_iommu *iommu) {} static inline void intel_drain_pasid_prq(struct device *dev, u32 pasid) {} -static inline struct iommu_domain *intel_svm_domain_alloc(void) -{ - return NULL; -} - -static inline void intel_svm_remove_dev_pasid(struct iommu_domain *domain) +static inline struct iommu_domain *intel_svm_domain_alloc(struct device *dev, + struct mm_struct *mm) { + return ERR_PTR(-ENODEV); } #endif |