diff options
Diffstat (limited to 'arch/arm/mm')
-rw-r--r-- | arch/arm/mm/cache-b15-rac.c | 3 | ||||
-rw-r--r-- | arch/arm/mm/dump.c | 29 | ||||
-rw-r--r-- | arch/arm/mm/fault-armv.c | 7 | ||||
-rw-r--r-- | arch/arm/mm/fault.c | 22 | ||||
-rw-r--r-- | arch/arm/mm/highmem.c | 35 | ||||
-rw-r--r-- | arch/arm/mm/idmap.c | 3 | ||||
-rw-r--r-- | arch/arm/mm/init.c | 68 | ||||
-rw-r--r-- | arch/arm/mm/ioremap.c | 12 | ||||
-rw-r--r-- | arch/arm/mm/mm.h | 2 | ||||
-rw-r--r-- | arch/arm/mm/mmu.c | 35 | ||||
-rw-r--r-- | arch/arm/mm/pgd.c | 40 |
11 files changed, 131 insertions, 125 deletions
diff --git a/arch/arm/mm/cache-b15-rac.c b/arch/arm/mm/cache-b15-rac.c index 3471fc64a3ae..bdc07030997b 100644 --- a/arch/arm/mm/cache-b15-rac.c +++ b/arch/arm/mm/cache-b15-rac.c @@ -358,8 +358,7 @@ static int __init b15_rac_init(void) set_bit(RAC_ENABLED, &b15_rac_flags); spin_unlock(&rac_lock); - pr_info("Broadcom Brahma-B15 readahead cache at: 0x%p\n", - b15_rac_base + RAC_CONFIG0_REG); + pr_info("%pOF: Broadcom Brahma-B15 readahead cache\n", dn); goto out; diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c index 7d6291f23251..677549d6854c 100644 --- a/arch/arm/mm/dump.c +++ b/arch/arm/mm/dump.c @@ -207,6 +207,7 @@ struct pg_level { static struct pg_level pg_level[] = { { }, { /* pgd */ + }, { /* p4d */ }, { /* pud */ }, { /* pmd */ .bits = section_bits, @@ -308,7 +309,7 @@ static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start, for (i = 0; i < PTRS_PER_PTE; i++, pte++) { addr = start + i * PAGE_SIZE; - note_page(st, addr, 4, pte_val(*pte), domain); + note_page(st, addr, 5, pte_val(*pte), domain); } } @@ -350,14 +351,14 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start) addr += SECTION_SIZE; pmd++; domain = get_domain_name(pmd); - note_page(st, addr, 3, pmd_val(*pmd), domain); + note_page(st, addr, 4, pmd_val(*pmd), domain); } } } -static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start) +static void walk_pud(struct pg_state *st, p4d_t *p4d, unsigned long start) { - pud_t *pud = pud_offset(pgd, 0); + pud_t *pud = pud_offset(p4d, 0); unsigned long addr; unsigned i; @@ -366,7 +367,23 @@ static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start) if (!pud_none(*pud)) { walk_pmd(st, pud, addr); } else { - note_page(st, addr, 2, pud_val(*pud), NULL); + note_page(st, addr, 3, pud_val(*pud), NULL); + } + } +} + +static void walk_p4d(struct pg_state *st, pgd_t *pgd, unsigned long start) +{ + p4d_t *p4d = p4d_offset(pgd, 0); + unsigned long addr; + unsigned i; + + for (i = 0; i < PTRS_PER_P4D; i++, p4d++) { + addr = start + i * P4D_SIZE; + if (!p4d_none(*p4d)) { + walk_pud(st, p4d, addr); + } else { + note_page(st, addr, 2, p4d_val(*p4d), NULL); } } } @@ -381,7 +398,7 @@ static void walk_pgd(struct pg_state *st, struct mm_struct *mm, for (i = 0; i < PTRS_PER_PGD; i++, pgd++) { addr = start + i * PGDIR_SIZE; if (!pgd_none(*pgd)) { - walk_pud(st, pgd, addr); + walk_p4d(st, pgd, addr); } else { note_page(st, addr, 1, pgd_val(*pgd), NULL); } diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index ae857f41f68d..489aaafa6ebd 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -91,6 +91,7 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address, { spinlock_t *ptl; pgd_t *pgd; + p4d_t *p4d; pud_t *pud; pmd_t *pmd; pte_t *pte; @@ -100,7 +101,11 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address, if (pgd_none_or_clear_bad(pgd)) return 0; - pud = pud_offset(pgd, address); + p4d = p4d_offset(pgd, address); + if (p4d_none_or_clear_bad(p4d)) + return 0; + + pud = pud_offset(p4d, address); if (pud_none_or_clear_bad(pud)) return 0; diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 2dd5c41cbb8d..ff230e9affc4 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -43,19 +43,21 @@ void show_pte(const char *lvl, struct mm_struct *mm, unsigned long addr) printk("%s[%08lx] *pgd=%08llx", lvl, addr, (long long)pgd_val(*pgd)); do { + p4d_t *p4d; pud_t *pud; pmd_t *pmd; pte_t *pte; - if (pgd_none(*pgd)) + p4d = p4d_offset(pgd, addr); + if (p4d_none(*p4d)) break; - if (pgd_bad(*pgd)) { + if (p4d_bad(*p4d)) { pr_cont("(bad)"); break; } - pud = pud_offset(pgd, addr); + pud = pud_offset(p4d, addr); if (PTRS_PER_PUD != 1) pr_cont(", *pud=%08llx", (long long)pud_val(*pud)); @@ -405,6 +407,7 @@ do_translation_fault(unsigned long addr, unsigned int fsr, { unsigned int index; pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; @@ -419,13 +422,16 @@ do_translation_fault(unsigned long addr, unsigned int fsr, pgd = cpu_get_pgd() + index; pgd_k = init_mm.pgd + index; - if (pgd_none(*pgd_k)) + p4d = p4d_offset(pgd, addr); + p4d_k = p4d_offset(pgd_k, addr); + + if (p4d_none(*p4d_k)) goto bad_area; - if (!pgd_present(*pgd)) - set_pgd(pgd, *pgd_k); + if (!p4d_present(*p4d)) + set_p4d(p4d, *p4d_k); - pud = pud_offset(pgd, addr); - pud_k = pud_offset(pgd_k, addr); + pud = pud_offset(p4d, addr); + pud_k = pud_offset(p4d_k, addr); if (pud_none(*pud_k)) goto bad_area; diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c index a76f8ace9ce6..e013f6b81328 100644 --- a/arch/arm/mm/highmem.c +++ b/arch/arm/mm/highmem.c @@ -31,36 +31,13 @@ static inline pte_t get_fixmap_pte(unsigned long vaddr) return *ptep; } -void *kmap(struct page *page) -{ - might_sleep(); - if (!PageHighMem(page)) - return page_address(page); - return kmap_high(page); -} -EXPORT_SYMBOL(kmap); - -void kunmap(struct page *page) -{ - BUG_ON(in_interrupt()); - if (!PageHighMem(page)) - return; - kunmap_high(page); -} -EXPORT_SYMBOL(kunmap); - -void *kmap_atomic(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned int idx; unsigned long vaddr; void *kmap; int type; - preempt_disable(); - pagefault_disable(); - if (!PageHighMem(page)) - return page_address(page); - #ifdef CONFIG_DEBUG_HIGHMEM /* * There is no cache coherency issue when non VIVT, so force the @@ -90,13 +67,13 @@ void *kmap_atomic(struct page *page) * in place, so the contained TLB flush ensures the TLB is updated * with the new mapping. */ - set_fixmap_pte(idx, mk_pte(page, kmap_prot)); + set_fixmap_pte(idx, mk_pte(page, prot)); return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic); +EXPORT_SYMBOL(kmap_atomic_high_prot); -void __kunmap_atomic(void *kvaddr) +void kunmap_atomic_high(void *kvaddr) { unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; int idx, type; @@ -118,10 +95,8 @@ void __kunmap_atomic(void *kvaddr) /* this address was obtained through kmap_high_get() */ kunmap_high(pte_page(pkmap_page_table[PKMAP_NR(vaddr)])); } - pagefault_enable(); - preempt_enable(); } -EXPORT_SYMBOL(__kunmap_atomic); +EXPORT_SYMBOL(kunmap_atomic_high); void *kmap_atomic_pfn(unsigned long pfn) { diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c index a033f6134a64..cd54411ef1b8 100644 --- a/arch/arm/mm/idmap.c +++ b/arch/arm/mm/idmap.c @@ -68,7 +68,8 @@ static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end, static void idmap_add_pud(pgd_t *pgd, unsigned long addr, unsigned long end, unsigned long prot) { - pud_t *pud = pud_offset(pgd, addr); + p4d_t *p4d = p4d_offset(pgd, addr); + pud_t *pud = pud_offset(p4d, addr); unsigned long next; do { diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 054be44d1cdb..01e18e43b174 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -92,18 +92,6 @@ EXPORT_SYMBOL(arm_dma_zone_size); */ phys_addr_t arm_dma_limit; unsigned long arm_dma_pfn_limit; - -static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, - unsigned long dma_size) -{ - if (size[0] <= dma_size) - return; - - size[ZONE_NORMAL] = size[0] - dma_size; - size[ZONE_DMA] = dma_size; - hole[ZONE_NORMAL] = hole[0]; - hole[ZONE_DMA] = 0; -} #endif void __init setup_dma_zone(const struct machine_desc *mdesc) @@ -121,56 +109,16 @@ void __init setup_dma_zone(const struct machine_desc *mdesc) static void __init zone_sizes_init(unsigned long min, unsigned long max_low, unsigned long max_high) { - unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; - struct memblock_region *reg; - - /* - * initialise the zones. - */ - memset(zone_size, 0, sizeof(zone_size)); + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 }; - /* - * The memory size has already been determined. If we need - * to do anything fancy with the allocation of this memory - * to the zones, now is the time to do it. - */ - zone_size[0] = max_low - min; -#ifdef CONFIG_HIGHMEM - zone_size[ZONE_HIGHMEM] = max_high - max_low; +#ifdef CONFIG_ZONE_DMA + max_zone_pfn[ZONE_DMA] = min(arm_dma_pfn_limit, max_low); #endif - - /* - * Calculate the size of the holes. - * holes = node_size - sum(bank_sizes) - */ - memcpy(zhole_size, zone_size, sizeof(zhole_size)); - for_each_memblock(memory, reg) { - unsigned long start = memblock_region_memory_base_pfn(reg); - unsigned long end = memblock_region_memory_end_pfn(reg); - - if (start < max_low) { - unsigned long low_end = min(end, max_low); - zhole_size[0] -= low_end - start; - } + max_zone_pfn[ZONE_NORMAL] = max_low; #ifdef CONFIG_HIGHMEM - if (end > max_low) { - unsigned long high_start = max(start, max_low); - zhole_size[ZONE_HIGHMEM] -= end - high_start; - } + max_zone_pfn[ZONE_HIGHMEM] = max_high; #endif - } - -#ifdef CONFIG_ZONE_DMA - /* - * Adjust the sizes according to any special requirements for - * this machine type. - */ - if (arm_dma_zone_size) - arm_adjust_dma_zone(zone_size, zhole_size, - arm_dma_zone_size >> PAGE_SHIFT); -#endif - - free_area_init_node(0, zone_size, min, zhole_size); + free_area_init(max_zone_pfn); } #ifdef CONFIG_HAVE_ARCH_PFN_VALID @@ -306,7 +254,7 @@ void __init bootmem_init(void) sparse_init(); /* - * Now free the memory - free_area_init_node needs + * Now free the memory - free_area_init needs * the sparse mem_map arrays initialized by sparse_init() * for memmap_init_zone(), otherwise all PFNs are invalid. */ @@ -571,7 +519,7 @@ static inline void section_update(unsigned long addr, pmdval_t mask, { pmd_t *pmd; - pmd = pmd_offset(pud_offset(pgd_offset(mm, addr), addr), addr); + pmd = pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, addr), addr), addr), addr); #ifdef CONFIG_ARM_LPAE pmd[0] = __pmd((pmd_val(pmd[0]) & mask) | prot); diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index 72286f9a4d30..75529d76d28c 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -142,12 +142,14 @@ static void unmap_area_sections(unsigned long virt, unsigned long size) { unsigned long addr = virt, end = virt + (size & ~(SZ_1M - 1)); pgd_t *pgd; + p4d_t *p4d; pud_t *pud; pmd_t *pmdp; flush_cache_vunmap(addr, end); pgd = pgd_offset_k(addr); - pud = pud_offset(pgd, addr); + p4d = p4d_offset(pgd, addr); + pud = pud_offset(p4d, addr); pmdp = pmd_offset(pud, addr); do { pmd_t pmd = *pmdp; @@ -190,6 +192,7 @@ remap_area_sections(unsigned long virt, unsigned long pfn, { unsigned long addr = virt, end = virt + size; pgd_t *pgd; + p4d_t *p4d; pud_t *pud; pmd_t *pmd; @@ -200,7 +203,8 @@ remap_area_sections(unsigned long virt, unsigned long pfn, unmap_area_sections(virt, size); pgd = pgd_offset_k(addr); - pud = pud_offset(pgd, addr); + p4d = p4d_offset(pgd, addr); + pud = pud_offset(p4d, addr); pmd = pmd_offset(pud, addr); do { pmd[0] = __pmd(__pfn_to_phys(pfn) | type->prot_sect); @@ -222,6 +226,7 @@ remap_area_supersections(unsigned long virt, unsigned long pfn, { unsigned long addr = virt, end = virt + size; pgd_t *pgd; + p4d_t *p4d; pud_t *pud; pmd_t *pmd; @@ -232,7 +237,8 @@ remap_area_supersections(unsigned long virt, unsigned long pfn, unmap_area_sections(virt, size); pgd = pgd_offset_k(virt); - pud = pud_offset(pgd, addr); + p4d = p4d_offset(pgd, addr); + pud = pud_offset(p4d, addr); pmd = pmd_offset(pud, addr); do { unsigned long super_pmd_val, i; diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 88c121ac14b3..4f1f72b75890 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -38,7 +38,7 @@ static inline pte_t get_top_pte(unsigned long va) static inline pmd_t *pmd_off_k(unsigned long virt) { - return pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt); + return pmd_offset(pud_offset(p4d_offset(pgd_offset_k(virt), virt), virt), virt); } struct mem_type { diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index ec8d0008bfa1..c425288f1a86 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -357,7 +357,8 @@ static pte_t *pte_offset_late_fixmap(pmd_t *dir, unsigned long addr) static inline pmd_t * __init fixmap_pmd(unsigned long addr) { pgd_t *pgd = pgd_offset_k(addr); - pud_t *pud = pud_offset(pgd, addr); + p4d_t *p4d = p4d_offset(pgd, addr); + pud_t *pud = pud_offset(p4d, addr); pmd_t *pmd = pmd_offset(pud, addr); return pmd; @@ -801,12 +802,12 @@ static void __init alloc_init_pmd(pud_t *pud, unsigned long addr, } while (pmd++, addr = next, addr != end); } -static void __init alloc_init_pud(pgd_t *pgd, unsigned long addr, +static void __init alloc_init_pud(p4d_t *p4d, unsigned long addr, unsigned long end, phys_addr_t phys, const struct mem_type *type, void *(*alloc)(unsigned long sz), bool ng) { - pud_t *pud = pud_offset(pgd, addr); + pud_t *pud = pud_offset(p4d, addr); unsigned long next; do { @@ -816,6 +817,21 @@ static void __init alloc_init_pud(pgd_t *pgd, unsigned long addr, } while (pud++, addr = next, addr != end); } +static void __init alloc_init_p4d(pgd_t *pgd, unsigned long addr, + unsigned long end, phys_addr_t phys, + const struct mem_type *type, + void *(*alloc)(unsigned long sz), bool ng) +{ + p4d_t *p4d = p4d_offset(pgd, addr); + unsigned long next; + + do { + next = p4d_addr_end(addr, end); + alloc_init_pud(p4d, addr, next, phys, type, alloc, ng); + phys += next - addr; + } while (p4d++, addr = next, addr != end); +} + #ifndef CONFIG_ARM_LPAE static void __init create_36bit_mapping(struct mm_struct *mm, struct map_desc *md, @@ -863,7 +879,8 @@ static void __init create_36bit_mapping(struct mm_struct *mm, pgd = pgd_offset(mm, addr); end = addr + length; do { - pud_t *pud = pud_offset(pgd, addr); + p4d_t *p4d = p4d_offset(pgd, addr); + pud_t *pud = pud_offset(p4d, addr); pmd_t *pmd = pmd_offset(pud, addr); int i; @@ -914,7 +931,7 @@ static void __init __create_mapping(struct mm_struct *mm, struct map_desc *md, do { unsigned long next = pgd_addr_end(addr, end); - alloc_init_pud(pgd, addr, next, phys, type, alloc, ng); + alloc_init_p4d(pgd, addr, next, phys, type, alloc, ng); phys += next - addr; addr = next; @@ -950,7 +967,13 @@ void __init create_mapping_late(struct mm_struct *mm, struct map_desc *md, bool ng) { #ifdef CONFIG_ARM_LPAE - pud_t *pud = pud_alloc(mm, pgd_offset(mm, md->virtual), md->virtual); + p4d_t *p4d; + pud_t *pud; + + p4d = p4d_alloc(mm, pgd_offset(mm, md->virtual), md->virtual); + if (!WARN_ON(!p4d)) + return; + pud = pud_alloc(mm, p4d, md->virtual); if (WARN_ON(!pud)) return; pmd_alloc(mm, pud, 0); diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c index 478bd2c6aa50..c5e1b27046a8 100644 --- a/arch/arm/mm/pgd.c +++ b/arch/arm/mm/pgd.c @@ -30,6 +30,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm) { pgd_t *new_pgd, *init_pgd; + p4d_t *new_p4d, *init_p4d; pud_t *new_pud, *init_pud; pmd_t *new_pmd, *init_pmd; pte_t *new_pte, *init_pte; @@ -53,8 +54,12 @@ pgd_t *pgd_alloc(struct mm_struct *mm) /* * Allocate PMD table for modules and pkmap mappings. */ - new_pud = pud_alloc(mm, new_pgd + pgd_index(MODULES_VADDR), + new_p4d = p4d_alloc(mm, new_pgd + pgd_index(MODULES_VADDR), MODULES_VADDR); + if (!new_p4d) + goto no_p4d; + + new_pud = pud_alloc(mm, new_p4d, MODULES_VADDR); if (!new_pud) goto no_pud; @@ -69,7 +74,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) * contains the machine vectors. The vectors are always high * with LPAE. */ - new_pud = pud_alloc(mm, new_pgd, 0); + new_p4d = p4d_alloc(mm, new_pgd, 0); + if (!new_p4d) + goto no_p4d; + + new_pud = pud_alloc(mm, new_p4d, 0); if (!new_pud) goto no_pud; @@ -91,7 +100,8 @@ pgd_t *pgd_alloc(struct mm_struct *mm) pmd_val(*new_pmd) |= PMD_DOMAIN(DOMAIN_VECTORS); #endif - init_pud = pud_offset(init_pgd, 0); + init_p4d = p4d_offset(init_pgd, 0); + init_pud = pud_offset(init_p4d, 0); init_pmd = pmd_offset(init_pud, 0); init_pte = pte_offset_map(init_pmd, 0); set_pte_ext(new_pte + 0, init_pte[0], 0); @@ -108,6 +118,8 @@ no_pte: no_pmd: pud_free(mm, new_pud); no_pud: + p4d_free(mm, new_p4d); +no_p4d: __pgd_free(new_pgd); no_pgd: return NULL; @@ -116,6 +128,7 @@ no_pgd: void pgd_free(struct mm_struct *mm, pgd_t *pgd_base) { pgd_t *pgd; + p4d_t *p4d; pud_t *pud; pmd_t *pmd; pgtable_t pte; @@ -127,7 +140,11 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd_base) if (pgd_none_or_clear_bad(pgd)) goto no_pgd; - pud = pud_offset(pgd, 0); + p4d = p4d_offset(pgd, 0); + if (p4d_none_or_clear_bad(p4d)) + goto no_p4d; + + pud = pud_offset(p4d, 0); if (pud_none_or_clear_bad(pud)) goto no_pud; @@ -144,8 +161,11 @@ no_pmd: pmd_free(mm, pmd); mm_dec_nr_pmds(mm); no_pud: - pgd_clear(pgd); + p4d_clear(p4d); pud_free(mm, pud); +no_p4d: + pgd_clear(pgd); + p4d_free(mm, p4d); no_pgd: #ifdef CONFIG_ARM_LPAE /* @@ -156,15 +176,21 @@ no_pgd: continue; if (pgd_val(*pgd) & L_PGD_SWAPPER) continue; - pud = pud_offset(pgd, 0); + p4d = p4d_offset(pgd, 0); + if (p4d_none_or_clear_bad(p4d)) + continue; + pud = pud_offset(p4d, 0); if (pud_none_or_clear_bad(pud)) continue; pmd = pmd_offset(pud, 0); pud_clear(pud); pmd_free(mm, pmd); mm_dec_nr_pmds(mm); - pgd_clear(pgd); + p4d_clear(p4d); pud_free(mm, pud); + mm_dec_nr_puds(mm); + pgd_clear(pgd); + p4d_free(mm, p4d); } #endif __pgd_free(pgd_base); |