--- zzzz-none-000/linux-3.10.107/arch/powerpc/include/asm/mmu-hash64.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/include/asm/mmu-hash64.h	2021-02-04 17:41:59.000000000 +0000
@@ -14,6 +14,7 @@
 
 #include <asm/asm-compat.h>
 #include <asm/page.h>
+#include <asm/bug.h>
 
 /*
  * This is necessary to get the definition of PGTABLE_RANGE which we
@@ -22,26 +23,7 @@
  */
 #include <asm/pgtable-ppc64.h>
 #include <asm/bug.h>
-
-/*
- * Segment table
- */
-
-#define STE_ESID_V	0x80
-#define STE_ESID_KS	0x20
-#define STE_ESID_KP	0x10
-#define STE_ESID_N	0x08
-
-#define STE_VSID_SHIFT	12
-
-/* Location of cpu0's segment table */
-#define STAB0_PAGE	0x8
-#define STAB0_OFFSET	(STAB0_PAGE << 12)
-#define STAB0_PHYS_ADDR	(STAB0_OFFSET + PHYSICAL_START)
-
-#ifndef __ASSEMBLY__
-extern char initial_stab[];
-#endif /* ! __ASSEMBLY */
+#include <asm/processor.h>
 
 /*
  * SLB
@@ -131,12 +113,13 @@
 #define TLBIEL_INVAL_SET_SHIFT	12
 
 #define POWER7_TLB_SETS		128	/* # sets in POWER7 TLB */
+#define POWER8_TLB_SETS		512	/* # sets in POWER8 TLB */
 
 #ifndef __ASSEMBLY__
 
 struct hash_pte {
-	unsigned long v;
-	unsigned long r;
+	__be64 v;
+	__be64 r;
 };
 
 extern struct hash_pte *htab_address;
@@ -209,6 +192,13 @@
 
 #ifndef __ASSEMBLY__
 
+static inline int slb_vsid_shift(int ssize)
+{
+	if (ssize == MMU_SEGSIZE_256M)
+		return SLB_VSID_SHIFT;
+	return SLB_VSID_SHIFT_1T;
+}
+
 static inline int segment_shift(int ssize)
 {
 	if (ssize == MMU_SEGSIZE_256M)
@@ -328,18 +318,39 @@
 	return hash & 0x7fffffffffUL;
 }
 
+#define HPTE_LOCAL_UPDATE	0x1
+#define HPTE_NOHPTE_UPDATE	0x2
+
 extern int __hash_page_4K(unsigned long ea, unsigned long access,
 			  unsigned long vsid, pte_t *ptep, unsigned long trap,
-			  unsigned int local, int ssize, int subpage_prot);
+			  unsigned long flags, int ssize, int subpage_prot);
 extern int __hash_page_64K(unsigned long ea, unsigned long access,
 			   unsigned long vsid, pte_t *ptep, unsigned long trap,
-			   unsigned int local, int ssize);
+			   unsigned long flags, int ssize);
 struct mm_struct;
 unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap);
-extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap);
+extern int hash_page_mm(struct mm_struct *mm, unsigned long ea,
+			unsigned long access, unsigned long trap,
+			unsigned long flags);
+extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap,
+		     unsigned long dsisr);
 int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
-		     pte_t *ptep, unsigned long trap, int local, int ssize,
-		     unsigned int shift, unsigned int mmu_psize);
+		     pte_t *ptep, unsigned long trap, unsigned long flags,
+		     int ssize, unsigned int shift, unsigned int mmu_psize);
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+extern int __hash_page_thp(unsigned long ea, unsigned long access,
+			   unsigned long vsid, pmd_t *pmdp, unsigned long trap,
+			   unsigned long flags, int ssize, unsigned int psize);
+#else
+static inline int __hash_page_thp(unsigned long ea, unsigned long access,
+				  unsigned long vsid, pmd_t *pmdp,
+				  unsigned long trap, unsigned long flags,
+				  int ssize, unsigned int psize)
+{
+	BUG();
+	return -1;
+}
+#endif
 extern void hash_failure_debug(unsigned long ea, unsigned long access,
 			       unsigned long vsid, unsigned long trap,
 			       int ssize, int psize, int lpsize,
@@ -347,6 +358,8 @@
 extern int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
 			     unsigned long pstart, unsigned long prot,
 			     int psize, int ssize);
+int htab_remove_mapping(unsigned long vstart, unsigned long vend,
+			int psize, int ssize);
 extern void add_gpage(u64 addr, u64 page_size, unsigned long number_of_pages);
 extern void demote_segment_4k(struct mm_struct *mm, unsigned long addr);
 
@@ -355,10 +368,8 @@
 extern void hpte_init_beat(void);
 extern void hpte_init_beat_v3(void);
 
-extern void stabs_alloc(void);
 extern void slb_initialize(void);
 extern void slb_flush_and_rebolt(void);
-extern void stab_initialize(unsigned long stab);
 
 extern void slb_vmalloc_update(void);
 extern void slb_set_size(u16 size);
@@ -482,7 +493,7 @@
  */
 struct subpage_prot_table {
 	unsigned long maxaddr;	/* only addresses < this are protected */
-	unsigned int **protptrs[2];
+	unsigned int **protptrs[(TASK_SIZE_USER64 >> 43)];
 	unsigned int *low_prot[4];
 };
 
@@ -526,6 +537,9 @@
 	/* for 4K PTE fragment support */
 	void *pte_frag;
 #endif
+#ifdef CONFIG_SPAPR_TCE_IOMMU
+	struct list_head iommu_group_mem_list;
+#endif
 } mm_context_t;