IOTLB flush already included in the PASID tear down and the page request drain process. There is no need to flush again.
Signed-off-by: Jacob Pan <[email protected]> Signed-off-by: Lu Baolu <[email protected]> --- drivers/iommu/intel-svm.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 2534641ef707..543109fe2003 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -212,7 +212,6 @@ static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm) list_for_each_entry_rcu(sdev, &svm->devs, list) { intel_pasid_tear_down_entry(svm->iommu, sdev->dev, svm->pasid); intel_svm_drain_prq(sdev->dev, svm->pasid); - intel_flush_svm_range_dev(svm, sdev, 0, -1, 0); } rcu_read_unlock(); @@ -406,7 +405,6 @@ int intel_svm_unbind_gpasid(struct device *dev, int pasid) list_del_rcu(&sdev->list); intel_pasid_tear_down_entry(iommu, dev, svm->pasid); intel_svm_drain_prq(dev, svm->pasid); - intel_flush_svm_range_dev(svm, sdev, 0, -1, 0); kfree_rcu(sdev, rcu); if (list_empty(&svm->devs)) { @@ -645,7 +643,6 @@ int intel_svm_unbind_mm(struct device *dev, int pasid) * hard to be as defensive as we might like. */ intel_pasid_tear_down_entry(iommu, dev, svm->pasid); intel_svm_drain_prq(dev, svm->pasid); - intel_flush_svm_range_dev(svm, sdev, 0, -1, 0); kfree_rcu(sdev, rcu); if (list_empty(&svm->devs)) { -- 2.17.1 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
