diff options
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r-- | arch/powerpc/mm/dma-noncoherent.c | 4 | ||||
-rw-r--r-- | arch/powerpc/mm/hash_native_64.c | 46 | ||||
-rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 38 | ||||
-rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 2 | ||||
-rw-r--r-- | arch/powerpc/mm/init_32.c | 5 | ||||
-rw-r--r-- | arch/powerpc/mm/init_64.c | 55 | ||||
-rw-r--r-- | arch/powerpc/mm/mem.c | 9 | ||||
-rw-r--r-- | arch/powerpc/mm/numa.c | 11 | ||||
-rw-r--r-- | arch/powerpc/mm/pgtable.c | 19 | ||||
-rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 5 | ||||
-rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 7 |
11 files changed, 129 insertions, 72 deletions
diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index 6747eece84af..7b6c10750179 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -287,9 +287,7 @@ void __dma_free_coherent(size_t size, void *vaddr) pte_clear(&init_mm, addr, ptep); if (pfn_valid(pfn)) { struct page *page = pfn_to_page(pfn); - - ClearPageReserved(page); - __free_page(page); + __free_reserved_page(page); } } addr += PAGE_SIZE; diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index c33d939120c9..3ea26c25590b 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -35,7 +35,11 @@ #define DBG_LOW(fmt...) #endif +#ifdef __BIG_ENDIAN__ #define HPTE_LOCK_BIT 3 +#else +#define HPTE_LOCK_BIT (56+3) +#endif DEFINE_RAW_SPINLOCK(native_tlbie_lock); @@ -172,7 +176,7 @@ static inline void tlbie(unsigned long vpn, int psize, int apsize, static inline void native_lock_hpte(struct hash_pte *hptep) { - unsigned long *word = &hptep->v; + unsigned long *word = (unsigned long *)&hptep->v; while (1) { if (!test_and_set_bit_lock(HPTE_LOCK_BIT, word)) @@ -184,7 +188,7 @@ static inline void native_lock_hpte(struct hash_pte *hptep) static inline void native_unlock_hpte(struct hash_pte *hptep) { - unsigned long *word = &hptep->v; + unsigned long *word = (unsigned long *)&hptep->v; clear_bit_unlock(HPTE_LOCK_BIT, word); } @@ -204,10 +208,10 @@ static long native_hpte_insert(unsigned long hpte_group, unsigned long vpn, } for (i = 0; i < HPTES_PER_GROUP; i++) { - if (! (hptep->v & HPTE_V_VALID)) { + if (! (be64_to_cpu(hptep->v) & HPTE_V_VALID)) { /* retry with lock held */ native_lock_hpte(hptep); - if (! (hptep->v & HPTE_V_VALID)) + if (! (be64_to_cpu(hptep->v) & HPTE_V_VALID)) break; native_unlock_hpte(hptep); } @@ -226,14 +230,14 @@ static long native_hpte_insert(unsigned long hpte_group, unsigned long vpn, i, hpte_v, hpte_r); } - hptep->r = hpte_r; + hptep->r = cpu_to_be64(hpte_r); /* Guarantee the second dword is visible before the valid bit */ eieio(); /* * Now set the first dword including the valid bit * NOTE: this also unlocks the hpte */ - hptep->v = hpte_v; + hptep->v = cpu_to_be64(hpte_v); __asm__ __volatile__ ("ptesync" : : : "memory"); @@ -254,12 +258,12 @@ static long native_hpte_remove(unsigned long hpte_group) for (i = 0; i < HPTES_PER_GROUP; i++) { hptep = htab_address + hpte_group + slot_offset; - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); if ((hpte_v & HPTE_V_VALID) && !(hpte_v & HPTE_V_BOLTED)) { /* retry with lock held */ native_lock_hpte(hptep); - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); if ((hpte_v & HPTE_V_VALID) && !(hpte_v & HPTE_V_BOLTED)) break; @@ -294,7 +298,7 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp, native_lock_hpte(hptep); - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); /* * We need to invalidate the TLB always because hpte_remove doesn't do * a tlb invalidate. If a hash bucket gets full, we "evict" a more/less @@ -308,8 +312,8 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp, } else { DBG_LOW(" -> hit\n"); /* Update the HPTE */ - hptep->r = (hptep->r & ~(HPTE_R_PP | HPTE_R_N)) | - (newpp & (HPTE_R_PP | HPTE_R_N | HPTE_R_C)); + hptep->r = cpu_to_be64((be64_to_cpu(hptep->r) & ~(HPTE_R_PP | HPTE_R_N)) | + (newpp & (HPTE_R_PP | HPTE_R_N | HPTE_R_C))); } native_unlock_hpte(hptep); @@ -334,7 +338,7 @@ static long native_hpte_find(unsigned long vpn, int psize, int ssize) slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; for (i = 0; i < HPTES_PER_GROUP; i++) { hptep = htab_address + slot; - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) /* HPTE matches */ @@ -369,8 +373,9 @@ static void native_hpte_updateboltedpp(unsigned long newpp, unsigned long ea, hptep = htab_address + slot; /* Update the HPTE */ - hptep->r = (hptep->r & ~(HPTE_R_PP | HPTE_R_N)) | - (newpp & (HPTE_R_PP | HPTE_R_N)); + hptep->r = cpu_to_be64((be64_to_cpu(hptep->r) & + ~(HPTE_R_PP | HPTE_R_N)) | + (newpp & (HPTE_R_PP | HPTE_R_N))); /* * Ensure it is out of the tlb too. Bolted entries base and * actual page size will be same. @@ -392,7 +397,7 @@ static void native_hpte_invalidate(unsigned long slot, unsigned long vpn, want_v = hpte_encode_avpn(vpn, bpsize, ssize); native_lock_hpte(hptep); - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); /* * We need to invalidate the TLB always because hpte_remove doesn't do @@ -458,7 +463,7 @@ static void native_hugepage_invalidate(struct mm_struct *mm, hptep = htab_address + slot; want_v = hpte_encode_avpn(vpn, psize, ssize); native_lock_hpte(hptep); - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); /* Even if we miss, we need to invalidate the TLB */ if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) @@ -519,11 +524,12 @@ static void hpte_decode(struct hash_pte *hpte, unsigned long slot, int *psize, int *apsize, int *ssize, unsigned long *vpn) { unsigned long avpn, pteg, vpi; - unsigned long hpte_v = hpte->v; + unsigned long hpte_v = be64_to_cpu(hpte->v); + unsigned long hpte_r = be64_to_cpu(hpte->r); unsigned long vsid, seg_off; int size, a_size, shift; /* Look at the 8 bit LP value */ - unsigned int lp = (hpte->r >> LP_SHIFT) & ((1 << LP_BITS) - 1); + unsigned int lp = (hpte_r >> LP_SHIFT) & ((1 << LP_BITS) - 1); if (!(hpte_v & HPTE_V_LARGE)) { size = MMU_PAGE_4K; @@ -612,7 +618,7 @@ static void native_hpte_clear(void) * running, right? and for crash dump, we probably * don't want to wait for a maybe bad cpu. */ - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); /* * Call __tlbie() here rather than tlbie() since we @@ -664,7 +670,7 @@ static void native_flush_hash_range(unsigned long number, int local) hptep = htab_address + slot; want_v = hpte_encode_avpn(vpn, psize, ssize); native_lock_hpte(hptep); - hpte_v = hptep->v; + hpte_v = be64_to_cpu(hptep->v); if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) native_unlock_hpte(hptep); diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index bde8b5589755..6176b3cdf579 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -251,19 +251,18 @@ static int __init htab_dt_scan_seg_sizes(unsigned long node, void *data) { char *type = of_get_flat_dt_prop(node, "device_type", NULL); - u32 *prop; + __be32 *prop; unsigned long size = 0; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) return 0; - prop = (u32 *)of_get_flat_dt_prop(node, "ibm,processor-segment-sizes", - &size); + prop = of_get_flat_dt_prop(node, "ibm,processor-segment-sizes", &size); if (prop == NULL) return 0; for (; size >= 4; size -= 4, ++prop) { - if (prop[0] == 40) { + if (be32_to_cpu(prop[0]) == 40) { DBG("1T segment support detected\n"); cur_cpu_spec->mmu_features |= MMU_FTR_1T_SEGMENT; return 1; @@ -307,23 +306,22 @@ static int __init htab_dt_scan_page_sizes(unsigned long node, void *data) { char *type = of_get_flat_dt_prop(node, "device_type", NULL); - u32 *prop; + __be32 *prop; unsigned long size = 0; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) return 0; - prop = (u32 *)of_get_flat_dt_prop(node, - "ibm,segment-page-sizes", &size); + prop = of_get_flat_dt_prop(node, "ibm,segment-page-sizes", &size); if (prop != NULL) { pr_info("Page sizes from device-tree:\n"); size /= 4; cur_cpu_spec->mmu_features &= ~(MMU_FTR_16M_PAGE); while(size > 0) { - unsigned int base_shift = prop[0]; - unsigned int slbenc = prop[1]; - unsigned int lpnum = prop[2]; + unsigned int base_shift = be32_to_cpu(prop[0]); + unsigned int slbenc = be32_to_cpu(prop[1]); + unsigned int lpnum = be32_to_cpu(prop[2]); struct mmu_psize_def *def; int idx, base_idx; @@ -356,8 +354,8 @@ static int __init htab_dt_scan_page_sizes(unsigned long node, def->tlbiel = 0; while (size > 0 && lpnum) { - unsigned int shift = prop[0]; - int penc = prop[1]; + unsigned int shift = be32_to_cpu(prop[0]); + int penc = be32_to_cpu(prop[1]); prop += 2; size -= 2; lpnum--; @@ -390,8 +388,8 @@ static int __init htab_dt_scan_hugepage_blocks(unsigned long node, const char *uname, int depth, void *data) { char *type = of_get_flat_dt_prop(node, "device_type", NULL); - unsigned long *addr_prop; - u32 *page_count_prop; + __be64 *addr_prop; + __be32 *page_count_prop; unsigned int expected_pages; long unsigned int phys_addr; long unsigned int block_size; @@ -405,12 +403,12 @@ static int __init htab_dt_scan_hugepage_blocks(unsigned long node, page_count_prop = of_get_flat_dt_prop(node, "ibm,expected#pages", NULL); if (page_count_prop == NULL) return 0; - expected_pages = (1 << page_count_prop[0]); + expected_pages = (1 << be32_to_cpu(page_count_prop[0])); addr_prop = of_get_flat_dt_prop(node, "reg", NULL); if (addr_prop == NULL) return 0; - phys_addr = addr_prop[0]; - block_size = addr_prop[1]; + phys_addr = be64_to_cpu(addr_prop[0]); + block_size = be64_to_cpu(addr_prop[1]); if (block_size != (16 * GB)) return 0; printk(KERN_INFO "Huge page(16GB) memory: " @@ -534,16 +532,16 @@ static int __init htab_dt_scan_pftsize(unsigned long node, void *data) { char *type = of_get_flat_dt_prop(node, "device_type", NULL); - u32 *prop; + __be32 *prop; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) return 0; - prop = (u32 *)of_get_flat_dt_prop(node, "ibm,pft-size", NULL); + prop = of_get_flat_dt_prop(node, "ibm,pft-size", NULL); if (prop != NULL) { /* pft_size[0] is the NUMA CEC cookie */ - ppc64_pft_size = prop[1]; + ppc64_pft_size = be32_to_cpu(prop[1]); return 1; } return 0; diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index d67db4bd672d..90bb6d9409bf 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -633,8 +633,6 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd, /* * This function frees user-level page tables of a process. - * - * Must be called with pagetable lock held. */ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index d47d3dab4870..cff59f1bec23 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -213,7 +213,12 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base, */ BUG_ON(first_memblock_base != 0); +#ifdef CONFIG_PIN_TLB + /* 8xx can only access 24MB at the moment */ + memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01800000)); +#else /* 8xx can only access 8MB at the moment */ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000)); +#endif } #endif /* CONFIG_8xx */ diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index d0cd9e4c6837..e3734edffa69 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -300,5 +300,58 @@ void vmemmap_free(unsigned long start, unsigned long end) { } -#endif /* CONFIG_SPARSEMEM_VMEMMAP */ +void register_page_bootmem_memmap(unsigned long section_nr, + struct page *start_page, unsigned long size) +{ +} + +/* + * We do not have access to the sparsemem vmemmap, so we fallback to + * walking the list of sparsemem blocks which we already maintain for + * the sake of crashdump. In the long run, we might want to maintain + * a tree if performance of that linear walk becomes a problem. + * + * realmode_pfn_to_page functions can fail due to: + * 1) As real sparsemem blocks do not lay in RAM continously (they + * are in virtual address space which is not available in the real mode), + * the requested page struct can be split between blocks so get_page/put_page + * may fail. + * 2) When huge pages are used, the get_page/put_page API will fail + * in real mode as the linked addresses in the page struct are virtual + * too. + */ +struct page *realmode_pfn_to_page(unsigned long pfn) +{ + struct vmemmap_backing *vmem_back; + struct page *page; + unsigned long page_size = 1 << mmu_psize_defs[mmu_vmemmap_psize].shift; + unsigned long pg_va = (unsigned long) pfn_to_page(pfn); + + for (vmem_back = vmemmap_list; vmem_back; vmem_back = vmem_back->list) { + if (pg_va < vmem_back->virt_addr) + continue; + + /* Check that page struct is not split between real pages */ + if ((pg_va + sizeof(struct page)) > + (vmem_back->virt_addr + page_size)) + return NULL; + + page = (struct page *) (vmem_back->phys + pg_va - + vmem_back->virt_addr); + return page; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(realmode_pfn_to_page); + +#elif defined(CONFIG_FLATMEM) + +struct page *realmode_pfn_to_page(unsigned long pfn) +{ + struct page *page = pfn_to_page(pfn); + return page; +} +EXPORT_SYMBOL_GPL(realmode_pfn_to_page); +#endif /* CONFIG_SPARSEMEM_VMEMMAP/CONFIG_FLATMEM */ diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 1cf9c5b67f24..3fa93dc7fe75 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -297,12 +297,21 @@ void __init paging_init(void) } #endif /* ! CONFIG_NEED_MULTIPLE_NODES */ +static void __init register_page_bootmem_info(void) +{ + int i; + + for_each_online_node(i) + register_page_bootmem_info_node(NODE_DATA(i)); +} + void __init mem_init(void) { #ifdef CONFIG_SWIOTLB swiotlb_init(0); #endif + register_page_bootmem_info(); high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); set_max_mapnr(max_pfn); free_all_bootmem(); diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index c916127f10c3..078d3e00a616 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -195,7 +195,7 @@ static const __be32 *of_get_usable_memory(struct device_node *memory) u32 len; prop = of_get_property(memory, "linux,drconf-usable-memory", &len); if (!prop || len < sizeof(unsigned int)) - return 0; + return NULL; return prop; } @@ -938,8 +938,7 @@ static void __init mark_reserved_regions_for_nid(int nid) unsigned long start_pfn = physbase >> PAGE_SHIFT; unsigned long end_pfn = PFN_UP(physbase + size); struct node_active_region node_ar; - unsigned long node_end_pfn = node->node_start_pfn + - node->node_spanned_pages; + unsigned long node_end_pfn = pgdat_end_pfn(node); /* * Check to make sure that this memblock.reserved area is @@ -1154,7 +1153,7 @@ static int hot_add_drconf_scn_to_nid(struct device_node *memory, * represented in the device tree as a node (i.e. memory@XXXX) for * each memblock. */ -int hot_add_node_scn_to_nid(unsigned long scn_addr) +static int hot_add_node_scn_to_nid(unsigned long scn_addr) { struct device_node *memory; int nid = -1; @@ -1235,7 +1234,7 @@ static u64 hot_add_drconf_memory_max(void) struct device_node *memory = NULL; unsigned int drconf_cell_cnt = 0; u64 lmb_size = 0; - const __be32 *dm = 0; + const __be32 *dm = NULL; memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); if (memory) { @@ -1535,7 +1534,7 @@ static void topology_work_fn(struct work_struct *work) } static DECLARE_WORK(topology_work, topology_work_fn); -void topology_schedule_update(void) +static void topology_schedule_update(void) { schedule_work(&topology_work); } diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index edda589795c3..841e0d00863c 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -32,8 +32,6 @@ #include <asm/tlbflush.h> #include <asm/tlb.h> -#include "mmu_decl.h" - static inline int is_exec_fault(void) { return current->thread.regs && TRAP(current->thread.regs) == 0x400; @@ -72,7 +70,7 @@ struct page * maybe_pte_to_page(pte_t pte) * support falls into the same category. */ -static pte_t set_pte_filter(pte_t pte, unsigned long addr) +static pte_t set_pte_filter(pte_t pte) { pte = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS); if (pte_looks_normal(pte) && !(cpu_has_feature(CPU_FTR_COHERENT_ICACHE) || @@ -81,17 +79,6 @@ static pte_t set_pte_filter(pte_t pte, unsigned long addr) if (!pg) return pte; if (!test_bit(PG_arch_1, &pg->flags)) { -#ifdef CONFIG_8xx - /* On 8xx, cache control instructions (particularly - * "dcbst" from flush_dcache_icache) fault as write - * operation if there is an unpopulated TLB entry - * for the address in question. To workaround that, - * we invalidate the TLB here, thus avoiding dcbst - * misbehaviour. - */ - /* 8xx doesn't care about PID, size or ind args */ - _tlbil_va(addr, 0, 0, 0); -#endif /* CONFIG_8xx */ flush_dcache_icache_page(pg); set_bit(PG_arch_1, &pg->flags); } @@ -111,7 +98,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, * as we don't have two bits to spare for _PAGE_EXEC and _PAGE_HWEXEC so * instead we "filter out" the exec permission for non clean pages. */ -static pte_t set_pte_filter(pte_t pte, unsigned long addr) +static pte_t set_pte_filter(pte_t pte) { struct page *pg; @@ -193,7 +180,7 @@ void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, * this context might not have been activated yet when this * is called. */ - pte = set_pte_filter(pte, addr); + pte = set_pte_filter(pte); /* Perform the setting of the PTE */ __set_pte_at(mm, addr, ptep, pte, 0); diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 6c856fb8c15b..5b9601715289 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -121,7 +121,10 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) ptepage = alloc_pages(flags, 0); if (!ptepage) return NULL; - pgtable_page_ctor(ptepage); + if (!pgtable_page_ctor(ptepage)) { + __free_page(ptepage); + return NULL; + } return ptepage; } diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 536eec72c0f7..9d95786aa80f 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -378,6 +378,10 @@ static pte_t *__alloc_for_cache(struct mm_struct *mm, int kernel) __GFP_REPEAT | __GFP_ZERO); if (!page) return NULL; + if (!kernel && !pgtable_page_ctor(page)) { + __free_page(page); + return NULL; + } ret = page_address(page); spin_lock(&mm->page_table_lock); @@ -392,9 +396,6 @@ static pte_t *__alloc_for_cache(struct mm_struct *mm, int kernel) } spin_unlock(&mm->page_table_lock); - if (!kernel) - pgtable_page_ctor(page); - return (pte_t *)ret; } |