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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2018-07-14 09:47:01 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-07-20 14:44:25 +0200 |
| commit | 4774cc5245700b8f4414123908c3a7a1c78e5cbb (patch) | |
| tree | e67765afbb4b2fbc16b3ac253bf637a962a394b9 /drivers/iommu/intel-svm.c | |
| parent | iommu/vt-d: Allocate and free pasid table (diff) | |
| download | linux-4774cc5245700b8f4414123908c3a7a1c78e5cbb.tar.xz linux-4774cc5245700b8f4414123908c3a7a1c78e5cbb.zip | |
iommu/vt-d: Apply per pci device pasid table in SVA
This patch applies the per pci device pasid table in the Shared
Virtual Address (SVA) implementation.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel-svm.c')
| -rw-r--r-- | drivers/iommu/intel-svm.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 9b5dc7262677..a253cdeabd61 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -274,11 +274,9 @@ static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm) * page) so that we end up taking a fault that the hardware really * *has* to handle gracefully without affecting other processes. */ - svm->iommu->pasid_table[svm->pasid].val = 0; - wmb(); - rcu_read_lock(); list_for_each_entry_rcu(sdev, &svm->devs, list) { + intel_pasid_clear_entry(sdev->dev, svm->pasid); intel_flush_pasid_dev(svm, sdev, svm->pasid); intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm); } @@ -299,6 +297,7 @@ static LIST_HEAD(global_svm_list); int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_ops *ops) { struct intel_iommu *iommu = intel_svm_device_to_iommu(dev); + struct pasid_entry *entry; struct intel_svm_dev *sdev; struct intel_svm *svm = NULL; struct mm_struct *mm = NULL; @@ -306,7 +305,7 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_ int pasid_max; int ret; - if (!iommu || !iommu->pasid_table) + if (!iommu) return -EINVAL; if (dev_is_pci(dev)) { @@ -384,8 +383,8 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_ } svm->iommu = iommu; - if (pasid_max > iommu->pasid_max) - pasid_max = iommu->pasid_max; + if (pasid_max > intel_pasid_max_id) + pasid_max = intel_pasid_max_id; /* Do not use PASID 0 in caching mode (virtualised IOMMU) */ ret = intel_pasid_alloc_id(svm, @@ -418,7 +417,8 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_ if (cpu_feature_enabled(X86_FEATURE_LA57)) pasid_entry_val |= PASID_ENTRY_FLPM_5LP; - iommu->pasid_table[svm->pasid].val = pasid_entry_val; + entry = intel_pasid_get_entry(dev, svm->pasid); + entry->val = pasid_entry_val; wmb(); @@ -453,7 +453,7 @@ int intel_svm_unbind_mm(struct device *dev, int pasid) mutex_lock(&pasid_mutex); iommu = intel_svm_device_to_iommu(dev); - if (!iommu || !iommu->pasid_table) + if (!iommu) goto out; svm = intel_pasid_lookup_id(pasid); @@ -476,11 +476,9 @@ int intel_svm_unbind_mm(struct device *dev, int pasid) intel_flush_pasid_dev(svm, sdev, svm->pasid); intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm); kfree_rcu(sdev, rcu); + intel_pasid_clear_entry(dev, svm->pasid); if (list_empty(&svm->devs)) { - svm->iommu->pasid_table[svm->pasid].val = 0; - wmb(); - intel_pasid_free_id(svm->pasid); if (svm->mm) mmu_notifier_unregister(&svm->notifier, svm->mm); @@ -513,7 +511,7 @@ int intel_svm_is_pasid_valid(struct device *dev, int pasid) mutex_lock(&pasid_mutex); iommu = intel_svm_device_to_iommu(dev); - if (!iommu || !iommu->pasid_table) + if (!iommu) goto out; svm = intel_pasid_lookup_id(pasid); |