diff options
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage-book3e.c | 21 | ||||
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 116 | ||||
| -rw-r--r-- | arch/powerpc/mm/mem.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/mm/tlb_low_64e.S | 36 | ||||
| -rw-r--r-- | arch/powerpc/mm/tlb_nohash.c | 2 |
5 files changed, 104 insertions, 76 deletions
diff --git a/arch/powerpc/mm/hugetlbpage-book3e.c b/arch/powerpc/mm/hugetlbpage-book3e.c index 343ad0b87261..3bc700655fc8 100644 --- a/arch/powerpc/mm/hugetlbpage-book3e.c +++ b/arch/powerpc/mm/hugetlbpage-book3e.c @@ -37,31 +37,32 @@ static inline int book3e_tlb_exists(unsigned long ea, unsigned long pid) return found; } -void book3e_hugetlb_preload(struct mm_struct *mm, unsigned long ea, pte_t pte) +void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea, + pte_t pte) { unsigned long mas1, mas2; u64 mas7_3; unsigned long psize, tsize, shift; unsigned long flags; + struct mm_struct *mm; #ifdef CONFIG_PPC_FSL_BOOK3E - int index, lz, ncams; - struct vm_area_struct *vma; + int index, ncams; #endif if (unlikely(is_kernel_addr(ea))) return; + mm = vma->vm_mm; + #ifdef CONFIG_PPC_MM_SLICES - psize = mmu_get_tsize(get_slice_psize(mm, ea)); - tsize = mmu_get_psize(psize); + psize = get_slice_psize(mm, ea); + tsize = mmu_get_tsize(psize); shift = mmu_psize_defs[psize].shift; #else - vma = find_vma(mm, ea); - psize = vma_mmu_pagesize(vma); /* returns actual size in bytes */ - asm (PPC_CNTLZL "%0,%1" : "=r" (lz) : "r" (psize)); - shift = 31 - lz; - tsize = 21 - lz; + psize = vma_mmu_pagesize(vma); + shift = __ilog2(psize); + tsize = shift - 10; #endif /* diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 5964371303ac..79c575d3dd63 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -28,22 +28,22 @@ unsigned int HPAGE_SHIFT; /* * Tracks gpages after the device tree is scanned and before the - * huge_boot_pages list is ready. On 64-bit implementations, this is - * just used to track 16G pages and so is a single array. 32-bit - * implementations may have more than one gpage size due to limitations - * of the memory allocators, so we need multiple arrays + * huge_boot_pages list is ready. On non-Freescale implementations, this is + * just used to track 16G pages and so is a single array. FSL-based + * implementations may have more than one gpage size, so we need multiple + * arrays */ -#ifdef CONFIG_PPC64 -#define MAX_NUMBER_GPAGES 1024 -static u64 gpage_freearray[MAX_NUMBER_GPAGES]; -static unsigned nr_gpages; -#else +#ifdef CONFIG_PPC_FSL_BOOK3E #define MAX_NUMBER_GPAGES 128 struct psize_gpages { u64 gpage_list[MAX_NUMBER_GPAGES]; unsigned int nr_gpages; }; static struct psize_gpages gpage_freearray[MMU_PAGE_COUNT]; +#else +#define MAX_NUMBER_GPAGES 1024 +static u64 gpage_freearray[MAX_NUMBER_GPAGES]; +static unsigned nr_gpages; #endif static inline int shift_to_mmu_psize(unsigned int shift) @@ -114,12 +114,12 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, struct kmem_cache *cachep; pte_t *new; -#ifdef CONFIG_PPC64 - cachep = PGT_CACHE(pdshift - pshift); -#else +#ifdef CONFIG_PPC_FSL_BOOK3E int i; int num_hugepd = 1 << (pshift - pdshift); cachep = hugepte_cache; +#else + cachep = PGT_CACHE(pdshift - pshift); #endif new = kmem_cache_zalloc(cachep, GFP_KERNEL|__GFP_REPEAT); @@ -131,12 +131,7 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, return -ENOMEM; spin_lock(&mm->page_table_lock); -#ifdef CONFIG_PPC64 - if (!hugepd_none(*hpdp)) - kmem_cache_free(cachep, new); - else - hpdp->pd = ((unsigned long)new & ~PD_HUGE) | pshift; -#else +#ifdef CONFIG_PPC_FSL_BOOK3E /* * We have multiple higher-level entries that point to the same * actual pte location. Fill in each as we go and backtrack on error. @@ -155,11 +150,28 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, hpdp->pd = 0; kmem_cache_free(cachep, new); } +#else + if (!hugepd_none(*hpdp)) + kmem_cache_free(cachep, new); + else + hpdp->pd = ((unsigned long)new & ~PD_HUGE) | pshift; #endif spin_unlock(&mm->page_table_lock); return 0; } +/* + * These macros define how to determine which level of the page table holds + * the hpdp. + */ +#ifdef CONFIG_PPC_FSL_BOOK3E +#define HUGEPD_PGD_SHIFT PGDIR_SHIFT +#define HUGEPD_PUD_SHIFT PUD_SHIFT +#else +#define HUGEPD_PGD_SHIFT PUD_SHIFT +#define HUGEPD_PUD_SHIFT PMD_SHIFT +#endif + pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz) { pgd_t *pg; @@ -172,12 +184,13 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz addr &= ~(sz-1); pg = pgd_offset(mm, addr); - if (pshift >= PUD_SHIFT) { + + if (pshift >= HUGEPD_PGD_SHIFT) { hpdp = (hugepd_t *)pg; } else { pdshift = PUD_SHIFT; pu = pud_alloc(mm, pg, addr); - if (pshift >= PMD_SHIFT) { + if (pshift >= HUGEPD_PUD_SHIFT) { hpdp = (hugepd_t *)pu; } else { pdshift = PMD_SHIFT; @@ -197,7 +210,7 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz return hugepte_offset(hpdp, addr, pdshift); } -#ifdef CONFIG_PPC32 +#ifdef CONFIG_PPC_FSL_BOOK3E /* Build list of addresses of gigantic pages. This function is used in early * boot before the buddy or bootmem allocator is setup. */ @@ -317,7 +330,7 @@ void __init reserve_hugetlb_gpages(void) } } -#else /* PPC64 */ +#else /* !PPC_FSL_BOOK3E */ /* Build list of addresses of gigantic pages. This function is used in early * boot before the buddy or bootmem allocator is setup. @@ -355,7 +368,7 @@ int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep) return 0; } -#ifdef CONFIG_PPC32 +#ifdef CONFIG_PPC_FSL_BOOK3E #define HUGEPD_FREELIST_SIZE \ ((PAGE_SIZE - sizeof(struct hugepd_freelist)) / sizeof(pte_t)) @@ -415,11 +428,11 @@ static void free_hugepd_range(struct mmu_gather *tlb, hugepd_t *hpdp, int pdshif unsigned long pdmask = ~((1UL << pdshift) - 1); unsigned int num_hugepd = 1; -#ifdef CONFIG_PPC64 - unsigned int shift = hugepd_shift(*hpdp); -#else - /* Note: On 32-bit the hpdp may be the first of several */ +#ifdef CONFIG_PPC_FSL_BOOK3E + /* Note: On fsl the hpdp may be the first of several */ num_hugepd = (1 << (hugepd_shift(*hpdp) - pdshift)); +#else + unsigned int shift = hugepd_shift(*hpdp); #endif start &= pdmask; @@ -437,10 +450,11 @@ static void free_hugepd_range(struct mmu_gather *tlb, hugepd_t *hpdp, int pdshif hpdp->pd = 0; tlb->need_flush = 1; -#ifdef CONFIG_PPC64 - pgtable_free_tlb(tlb, hugepte, pdshift - shift); -#else + +#ifdef CONFIG_PPC_FSL_BOOK3E hugepd_free(tlb, hugepte); +#else + pgtable_free_tlb(tlb, hugepte, pdshift - shift); #endif } @@ -453,14 +467,23 @@ static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud, unsigned long start; start = addr; - pmd = pmd_offset(pud, addr); do { + pmd = pmd_offset(pud, addr); next = pmd_addr_end(addr, end); if (pmd_none(*pmd)) continue; +#ifdef CONFIG_PPC_FSL_BOOK3E + /* + * Increment next by the size of the huge mapping since + * there may be more than one entry at this level for a + * single hugepage, but all of them point to + * the same kmem cache that holds the hugepte. + */ + next = addr + (1 << hugepd_shift(*(hugepd_t *)pmd)); +#endif free_hugepd_range(tlb, (hugepd_t *)pmd, PMD_SHIFT, addr, next, floor, ceiling); - } while (pmd++, addr = next, addr != end); + } while (addr = next, addr != end); start &= PUD_MASK; if (start < floor) @@ -487,8 +510,8 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd, unsigned long start; start = addr; - pud = pud_offset(pgd, addr); do { + pud = pud_offset(pgd, addr); next = pud_addr_end(addr, end); if (!is_hugepd(pud)) { if (pud_none_or_clear_bad(pud)) @@ -496,10 +519,19 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd, hugetlb_free_pmd_range(tlb, pud, addr, next, floor, ceiling); } else { +#ifdef CONFIG_PPC_FSL_BOOK3E + /* + * Increment next by the size of the huge mapping since + * there may be more than one entry at this level for a + * single hugepage, but all of them point to + * the same kmem cache that holds the hugepte. + */ + next = addr + (1 << hugepd_shift(*(hugepd_t *)pud)); +#endif free_hugepd_range(tlb, (hugepd_t *)pud, PUD_SHIFT, addr, next, floor, ceiling); } - } while (pud++, addr = next, addr != end); + } while (addr = next, addr != end); start &= PGDIR_MASK; if (start < floor) @@ -554,12 +586,12 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, continue; hugetlb_free_pud_range(tlb, pgd, addr, next, floor, ceiling); } else { -#ifdef CONFIG_PPC32 +#ifdef CONFIG_PPC_FSL_BOOK3E /* * Increment next by the size of the huge mapping since - * on 32-bit there may be more than one entry at the pgd - * level for a single hugepage, but all of them point to - * the same kmem cache that holds the hugepte. + * there may be more than one entry at the pgd level + * for a single hugepage, but all of them point to the + * same kmem cache that holds the hugepte. */ next = addr + (1 << hugepd_shift(*(hugepd_t *)pgd)); #endif @@ -697,19 +729,17 @@ int gup_hugepd(hugepd_t *hugepd, unsigned pdshift, return 1; } +#ifdef CONFIG_PPC_MM_SLICES unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { -#ifdef CONFIG_PPC_MM_SLICES struct hstate *hstate = hstate_file(file); int mmu_psize = shift_to_mmu_psize(huge_page_shift(hstate)); return slice_get_unmapped_area(addr, len, flags, mmu_psize, 1, 0); -#else - return get_unmapped_area(file, addr, len, pgoff, flags); -#endif } +#endif unsigned long vma_mmu_pagesize(struct vm_area_struct *vma) { @@ -783,7 +813,7 @@ static int __init hugepage_setup_sz(char *str) } __setup("hugepagesz=", hugepage_setup_sz); -#ifdef CONFIG_FSL_BOOKE +#ifdef CONFIG_PPC_FSL_BOOK3E struct kmem_cache *hugepte_cache; static int __init hugetlbpage_init(void) { diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 22563b9664c3..395f42d5f785 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -51,6 +51,7 @@ #include <asm/vdso.h> #include <asm/fixmap.h> #include <asm/swiotlb.h> +#include <asm/rtas.h> #include "mmu_decl.h" @@ -553,7 +554,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, #if (defined(CONFIG_PPC_BOOK3E_64) || defined(CONFIG_PPC_FSL_BOOK3E)) \ && defined(CONFIG_HUGETLB_PAGE) if (is_vm_hugetlb_page(vma)) - book3e_hugetlb_preload(vma->vm_mm, address, *ptep); + book3e_hugetlb_preload(vma, address, *ptep); #endif } @@ -600,6 +601,8 @@ int devmem_is_allowed(unsigned long pfn) return 0; if (!page_is_ram(pfn)) return 1; + if (page_is_rtas_user_buf(pfn)) + return 1; return 0; } #endif /* CONFIG_STRICT_DEVMEM */ diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S index dc4a5f385e41..ff672bd8fea9 100644 --- a/arch/powerpc/mm/tlb_low_64e.S +++ b/arch/powerpc/mm/tlb_low_64e.S @@ -94,11 +94,11 @@ srdi r15,r16,60 /* get region */ rldicl. r10,r16,64-PGTABLE_EADDR_SIZE,PGTABLE_EADDR_SIZE+4 - bne- dtlb_miss_fault_bolted + bne- dtlb_miss_fault_bolted /* Bail if fault addr is invalid */ rlwinm r10,r11,32-19,27,27 rlwimi r10,r11,32-16,19,19 - cmpwi r15,0 + cmpwi r15,0 /* user vs kernel check */ ori r10,r10,_PAGE_PRESENT oris r11,r10,_PAGE_ACCESSED@h @@ -120,44 +120,38 @@ tlb_miss_common_bolted: rldicl r15,r16,64-PGDIR_SHIFT+3,64-PGD_INDEX_SIZE-3 cmpldi cr0,r14,0 clrrdi r15,r15,3 - beq tlb_miss_fault_bolted + beq tlb_miss_fault_bolted /* No PGDIR, bail */ BEGIN_MMU_FTR_SECTION /* Set the TLB reservation and search for existing entry. Then load * the entry. */ PPC_TLBSRX_DOT(0,r16) - ldx r14,r14,r15 - beq normal_tlb_miss_done + ldx r14,r14,r15 /* grab pgd entry */ + beq normal_tlb_miss_done /* tlb exists already, bail */ MMU_FTR_SECTION_ELSE - ldx r14,r14,r15 + ldx r14,r14,r15 /* grab pgd entry */ ALT_MMU_FTR_SECTION_END_IFSET(MMU_FTR_USE_TLBRSRV) #ifndef CONFIG_PPC_64K_PAGES rldicl r15,r16,64-PUD_SHIFT+3,64-PUD_INDEX_SIZE-3 clrrdi r15,r15,3 - - cmpldi cr0,r14,0 - beq tlb_miss_fault_bolted - - ldx r14,r14,r15 + cmpdi cr0,r14,0 + bge tlb_miss_fault_bolted /* Bad pgd entry or hugepage; bail */ + ldx r14,r14,r15 /* grab pud entry */ #endif /* CONFIG_PPC_64K_PAGES */ rldicl r15,r16,64-PMD_SHIFT+3,64-PMD_INDEX_SIZE-3 clrrdi r15,r15,3 - - cmpldi cr0,r14,0 - beq tlb_miss_fault_bolted - - ldx r14,r14,r15 + cmpdi cr0,r14,0 + bge tlb_miss_fault_bolted + ldx r14,r14,r15 /* Grab pmd entry */ rldicl r15,r16,64-PAGE_SHIFT+3,64-PTE_INDEX_SIZE-3 clrrdi r15,r15,3 - - cmpldi cr0,r14,0 - beq tlb_miss_fault_bolted - - ldx r14,r14,r15 + cmpdi cr0,r14,0 + bge tlb_miss_fault_bolted + ldx r14,r14,r15 /* Grab PTE, normal (!huge) page */ /* Check if required permissions are met */ andc. r15,r11,r14 diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index 4e13d6f9023e..b2c65c660852 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -52,7 +52,7 @@ * indirect page table entries. */ #ifdef CONFIG_PPC_BOOK3E_MMU -#ifdef CONFIG_FSL_BOOKE +#ifdef CONFIG_PPC_FSL_BOOK3E struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { [MMU_PAGE_4K] = { .shift = 12, |