1 files changed, 0 insertions, 54 deletions
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index 437d1f1cc5ec..61776790cd67 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -608,57 +608,3 @@ void force_flush_all(void)
 		vma = vma->vm_next;
 	}
 }
-
-struct page_change_data {
-	unsigned int set_mask, clear_mask;
-};
-
-static int change_page_range(pte_t *ptep, unsigned long addr, void *data)
-{
-	struct page_change_data *cdata = data;
-	pte_t pte = READ_ONCE(*ptep);
-
-	pte_clear_bits(pte, cdata->clear_mask);
-	pte_set_bits(pte, cdata->set_mask);
-
-	set_pte(ptep, pte);
-	return 0;
-}
-
-static int change_memory(unsigned long start, unsigned long pages,
-			 unsigned int set_mask, unsigned int clear_mask)
-{
-	unsigned long size = pages * PAGE_SIZE;
-	struct page_change_data data;
-	int ret;
-
-	data.set_mask = set_mask;
-	data.clear_mask = clear_mask;
-
-	ret = apply_to_page_range(&init_mm, start, size, change_page_range,
-				  &data);
-
-	flush_tlb_kernel_range(start, start + size);
-
-	return ret;
-}
-
-int set_memory_ro(unsigned long addr, int numpages)
-{
-	return change_memory(addr, numpages, 0, _PAGE_RW);
-}
-
-int set_memory_rw(unsigned long addr, int numpages)
-{
-	return change_memory(addr, numpages, _PAGE_RW, 0);
-}
-
-int set_memory_nx(unsigned long addr, int numpages)
-{
-	return -EOPNOTSUPP;
-}
-
-int set_memory_x(unsigned long addr, int numpages)
-{
-	return -EOPNOTSUPP;
-}