--- zzzz-none-000/linux-3.10.107/arch/mn10300/include/asm/pgtable.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mn10300/include/asm/pgtable.h	2021-02-04 17:41:59.000000000 +0000
@@ -56,7 +56,9 @@
 #define PGDIR_SHIFT	22
 #define PTRS_PER_PGD	1024
 #define PTRS_PER_PUD	1	/* we don't really have any PUD physically */
+#define __PAGETABLE_PUD_FOLDED
 #define PTRS_PER_PMD	1	/* we don't really have any PMD physically */
+#define __PAGETABLE_PMD_FOLDED
 #define PTRS_PER_PTE	1024
 
 #define PGD_SIZE	PAGE_SIZE
@@ -65,7 +67,7 @@
 #define PGDIR_MASK	(~(PGDIR_SIZE - 1))
 
 #define USER_PTRS_PER_PGD	(TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS	0
+#define FIRST_USER_ADDRESS	0UL
 
 #define USER_PGD_PTRS		(PAGE_OFFSET >> PGDIR_SHIFT)
 #define KERNEL_PGD_PTRS		(PTRS_PER_PGD - USER_PGD_PTRS)
@@ -134,7 +136,6 @@
 #define _PAGE_NX		0			/* no-execute bit */
 
 /* If _PAGE_VALID is clear, we use these: */
-#define _PAGE_FILE		xPTEL2_C	/* set:pagecache unset:swap */
 #define _PAGE_PROTNONE		0x000		/* If not present */
 
 #define __PAGE_PROT_UWAUX	0x010
@@ -241,11 +242,6 @@
 static inline int pte_write(pte_t pte)	{ return pte_val(pte) & __PAGE_PROT_WRITE; }
 static inline int pte_special(pte_t pte){ return 0; }
 
-/*
- * The following only works if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)	{ return pte_val(pte) & _PAGE_FILE; }
-
 static inline pte_t pte_rdprotect(pte_t pte)
 {
 	pte_val(pte) &= ~(__PAGE_PROT_USER|__PAGE_PROT_UWAUX); return pte;
@@ -338,16 +334,11 @@
 	return 1;
 }
 
-#define PTE_FILE_MAX_BITS	30
-
-#define pte_to_pgoff(pte)	(pte_val(pte) >> 2)
-#define pgoff_to_pte(off)	__pte((off) << 2 | _PAGE_FILE)
-
 /* Encode and de-code a swap entry */
-#define __swp_type(x)			(((x).val >> 2) & 0x3f)
-#define __swp_offset(x)			((x).val >> 8)
+#define __swp_type(x)			(((x).val >> 1) & 0x3f)
+#define __swp_offset(x)			((x).val >> 7)
 #define __swp_entry(type, offset) \
-	((swp_entry_t) { ((type) << 2) | ((offset) << 8) })
+	((swp_entry_t) { ((type) << 1) | ((offset) << 7) })
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		__pte((x).val)
 
@@ -486,9 +477,6 @@
 
 #define kern_addr_valid(addr)	(1)
 
-#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
-	remap_pfn_range((vma), (vaddr), (pfn), (size), (prot))
-
 #define MK_IOSPACE_PFN(space, pfn)	(pfn)
 #define GET_IOSPACE(pfn)		0
 #define GET_PFN(pfn)			(pfn)