Messages in this thread Patch in this message | | | From | Peter Xu <> | Subject | [PATCH 1/2] iommu/vt-d: Remove change_pte notifier | Date | Wed, 30 Jan 2019 13:57:57 +0800 |
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The change_pte() interface is tailored for PFN updates, while the other notifier invalidate_range() should be enough for Intel IOMMU cache flushing. Actually we've done similar thing for AMD IOMMU already in 8301da53fbc1 ("iommu/amd: Remove change_pte mmu_notifier call-back", 2014-07-30) but the Intel IOMMU driver still have it.
Signed-off-by: Peter Xu <peterx@redhat.com> --- drivers/iommu/intel-svm.c | 9 --------- 1 file changed, 9 deletions(-)
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index a2a2aa4439aa..e9fd3ca057ac 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -180,14 +180,6 @@ static void intel_flush_svm_range(struct intel_svm *svm, unsigned long address, rcu_read_unlock(); } -static void intel_change_pte(struct mmu_notifier *mn, struct mm_struct *mm, - unsigned long address, pte_t pte) -{ - struct intel_svm *svm = container_of(mn, struct intel_svm, notifier); - - intel_flush_svm_range(svm, address, 1, 1, 0); -} - /* Pages have been freed at this point */ static void intel_invalidate_range(struct mmu_notifier *mn, struct mm_struct *mm, @@ -227,7 +219,6 @@ static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm) static const struct mmu_notifier_ops intel_mmuops = { .release = intel_mm_release, - .change_pte = intel_change_pte, .invalidate_range = intel_invalidate_range, }; -- 2.17.1
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