1373 static int subpage_protection(struct mm_struct *mm, unsigned long ea)  in subpage_protection()  argument
1382 	if (ea >= spt->maxaddr)  in subpage_protection()
1384 	if (ea < 0x100000000UL) {  in subpage_protection()
1388 		sbpm = spt->protptrs[ea >> SBP_L3_SHIFT];  in subpage_protection()
1392 	sbpp = sbpm[(ea >> SBP_L2_SHIFT) & (SBP_L2_COUNT - 1)];  in subpage_protection()
1395 	spp = sbpp[(ea >> PAGE_SHIFT) & (SBP_L1_COUNT - 1)];  in subpage_protection()
1398 	spp >>= 30 - 2 * ((ea >> 12) & 0xf);  in subpage_protection()
1411 static inline int subpage_protection(struct mm_struct *mm, unsigned long ea)  in subpage_protection()  argument
1417 void hash_failure_debug(unsigned long ea, unsigned long access,  in hash_failure_debug()  argument
1423 	pr_info("mm: Hashing failure ! EA=0x%lx access=0x%lx current=%s\n",  in hash_failure_debug()
1424 		ea, access, current->comm);  in hash_failure_debug()
1429 static void check_paca_psize(unsigned long ea, struct mm_struct *mm,  in check_paca_psize()  argument
1433 		if (psize != get_paca_psize(ea)) {  in check_paca_psize()
1452 int hash_page_mm(struct mm_struct *mm, unsigned long ea,  in hash_page_mm()  argument
1464 	DBG_LOW("hash_page(ea=%016lx, access=%lx, trap=%lx\n",  in hash_page_mm()
1465 		ea, access, trap);  in hash_page_mm()
1466 	trace_hash_fault(ea, access, trap);  in hash_page_mm()
1469 	switch (get_region_id(ea)) {  in hash_page_mm()
1477 		psize = get_slice_psize(mm, ea);  in hash_page_mm()
1478 		ssize = user_segment_size(ea);  in hash_page_mm()
1479 		vsid = get_user_vsid(&mm->context, ea, ssize);  in hash_page_mm()
1482 		vsid = get_kernel_vsid(ea, mmu_kernel_ssize);  in hash_page_mm()
1489 		vsid = get_kernel_vsid(ea, mmu_kernel_ssize);  in hash_page_mm()
1531 		ea &= ~((1ul << mmu_psize_defs[psize].shift) - 1);  in hash_page_mm()
1535 	ptep = find_linux_pte(pgdir, ea, &is_thp, &hugeshift);  in hash_page_mm()
1564 			rc = __hash_page_thp(ea, access, vsid, (pmd_t *)ptep,  in hash_page_mm()
1568 			rc = __hash_page_huge(ea, access, vsid, ptep, trap,  in hash_page_mm()
1581 			check_paca_psize(ea, mm, psize, user_region);  in hash_page_mm()
1596 		demote_segment_4k(mm, ea);  in hash_page_mm()
1606 			demote_segment_4k(mm, ea);  in hash_page_mm()
1608 		} else if (ea < VMALLOC_END) {  in hash_page_mm()
1625 		check_paca_psize(ea, mm, psize, user_region);  in hash_page_mm()
1629 		rc = __hash_page_64K(ea, access, vsid, ptep, trap,  in hash_page_mm()
1634 		int spp = subpage_protection(mm, ea);  in hash_page_mm()
1638 			rc = __hash_page_4K(ea, access, vsid, ptep, trap,  in hash_page_mm()
1647 		hash_failure_debug(ea, access, vsid, trap, ssize, psize,  in hash_page_mm()
1662 int hash_page(unsigned long ea, unsigned long access, unsigned long trap,  in hash_page()  argument
1668 	if ((get_region_id(ea) == VMALLOC_REGION_ID) ||  in hash_page()
1669 	    (get_region_id(ea) == IO_REGION_ID))  in hash_page()
1675 	return hash_page_mm(mm, ea, access, trap, flags);  in hash_page()
1681 	unsigned long ea = regs->dar;  in DEFINE_INTERRUPT_HANDLER()  local
1694 	region_id = get_region_id(ea);  in DEFINE_INTERRUPT_HANDLER()
1720 	err = hash_page_mm(mm, ea, access, TRAP(regs), flags);  in DEFINE_INTERRUPT_HANDLER()
1725 				_exception(SIGSEGV, regs, SEGV_ACCERR, ea);  in DEFINE_INTERRUPT_HANDLER()
1727 				_exception(SIGBUS, regs, BUS_ADRERR, ea);  in DEFINE_INTERRUPT_HANDLER()
1738 static bool should_hash_preload(struct mm_struct *mm, unsigned long ea)  in should_hash_preload()  argument
1740 	int psize = get_slice_psize(mm, ea);  in should_hash_preload()
1747 	 * Don't prefault if subpage protection is enabled for the EA.  in should_hash_preload()
1749 	if (unlikely((psize == MMU_PAGE_4K) && subpage_protection(mm, ea)))  in should_hash_preload()
1755 static void hash_preload(struct mm_struct *mm, pte_t *ptep, unsigned long ea,  in hash_preload()  argument
1764 	BUG_ON(get_region_id(ea) != USER_REGION_ID);  in hash_preload()
1766 	if (!should_hash_preload(mm, ea))  in hash_preload()
1769 	DBG_LOW("hash_preload(mm=%p, mm->pgdir=%p, ea=%016lx, access=%lx,"  in hash_preload()
1770 		" trap=%lx\n", mm, mm->pgd, ea, access, trap);  in hash_preload()
1778 	ssize = user_segment_size(ea);  in hash_preload()
1779 	vsid = get_user_vsid(&mm->context, ea, ssize);  in hash_preload()
1817 		rc = __hash_page_64K(ea, access, vsid, ptep, trap,  in hash_preload()
1821 		rc = __hash_page_4K(ea, access, vsid, ptep, trap, update_flags,  in hash_preload()
1822 				    ssize, subpage_protection(mm, ea));  in hash_preload()
1828 		hash_failure_debug(ea, access, vsid, trap, ssize,  in hash_preload()
2070 void hpt_do_stress(unsigned long ea, unsigned long hpte_group)  in hpt_do_stress()  argument
2093 	if (ea >= PAGE_OFFSET) {  in hpt_do_stress()