1 files changed, 0 insertions, 46 deletions

diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
index 8ab124a67311..54ae6c2be1b7 100644
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -211,44 +211,6 @@ static long tce_iommu_register_pages(struct tce_container *container,
 	return 0;
 }
 
-static long tce_iommu_userspace_view_alloc(struct iommu_table *tbl,
-		struct mm_struct *mm)
-{
-	unsigned long cb = _ALIGN_UP(sizeof(tbl->it_userspace[0]) *
-			tbl->it_size, PAGE_SIZE);
-	unsigned long *uas;
-	long ret;
-
-	BUG_ON(tbl->it_userspace);
-
-	ret = try_increment_locked_vm(mm, cb >> PAGE_SHIFT);
-	if (ret)
-		return ret;
-
-	uas = vzalloc(cb);
-	if (!uas) {
-		decrement_locked_vm(mm, cb >> PAGE_SHIFT);
-		return -ENOMEM;
-	}
-	tbl->it_userspace = (__be64 *) uas;
-
-	return 0;
-}
-
-static void tce_iommu_userspace_view_free(struct iommu_table *tbl,
-		struct mm_struct *mm)
-{
-	unsigned long cb = _ALIGN_UP(sizeof(tbl->it_userspace[0]) *
-			tbl->it_size, PAGE_SIZE);
-
-	if (!tbl->it_userspace)
-		return;
-
-	vfree(tbl->it_userspace);
-	tbl->it_userspace = NULL;
-	decrement_locked_vm(mm, cb >> PAGE_SHIFT);
-}
-
 static bool tce_page_is_contained(struct page *page, unsigned page_shift)
 {
 	/*
@@ -599,12 +561,6 @@ static long tce_iommu_build_v2(struct tce_container *container,
 	unsigned long hpa;
 	enum dma_data_direction dirtmp;
 
-	if (!tbl->it_userspace) {
-		ret = tce_iommu_userspace_view_alloc(tbl, container->mm);
-		if (ret)
-			return ret;
-	}
-
 	for (i = 0; i < pages; ++i) {
 		struct mm_iommu_table_group_mem_t *mem = NULL;
 		__be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry + i);
@@ -685,7 +641,6 @@ static void tce_iommu_free_table(struct tce_container *container,
 {
 	unsigned long pages = tbl->it_allocated_size >> PAGE_SHIFT;
 
-	tce_iommu_userspace_view_free(tbl, container->mm);
 	iommu_tce_table_put(tbl);
 	decrement_locked_vm(container->mm, pages);
 }
@@ -1200,7 +1155,6 @@ static void tce_iommu_release_ownership(struct tce_container *container,
 			continue;
 
 		tce_iommu_clear(container, tbl, tbl->it_offset, tbl->it_size);
-		tce_iommu_userspace_view_free(tbl, container->mm);
 		if (tbl->it_map)
 			iommu_release_ownership(tbl);