--- zzzz-none-000/linux-3.10.107/arch/powerpc/include/asm/pte-hash64.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/include/asm/pte-hash64.h	2021-02-04 17:41:59.000000000 +0000
@@ -16,10 +16,10 @@
  */
 #define _PAGE_PRESENT		0x0001 /* software: pte contains a translation */
 #define _PAGE_USER		0x0002 /* matches one of the PP bits */
-#define _PAGE_FILE		0x0002 /* (!present only) software: pte holds file offset */
+#define _PAGE_BIT_SWAP_TYPE	2
 #define _PAGE_EXEC		0x0004 /* No execute on POWER4 and newer (we invert) */
 #define _PAGE_GUARDED		0x0008
-#define _PAGE_COHERENT		0x0010 /* M: enforce memory coherence (SMP systems) */
+/* We can derive Memory coherence from _PAGE_NO_CACHE */
 #define _PAGE_NO_CACHE		0x0020 /* I: cache inhibit */
 #define _PAGE_WRITETHRU		0x0040 /* W: cache write-through */
 #define _PAGE_DIRTY		0x0080 /* C: page changed */