diff options
Diffstat (limited to 'arch/alpha/mm/init.c')
| -rw-r--r-- | arch/alpha/mm/init.c | 49 |
1 files changed, 31 insertions, 18 deletions
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c index 12e218d3792a..a155180d7a83 100644 --- a/arch/alpha/mm/init.c +++ b/arch/alpha/mm/init.c @@ -24,7 +24,6 @@ #include <linux/gfp.h> #include <linux/uaccess.h> -#include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/hwrpb.h> #include <asm/dma.h> @@ -77,14 +76,14 @@ pgd_alloc(struct mm_struct *mm) pmd_t * __bad_pagetable(void) { - memset((void *) EMPTY_PGT, 0, PAGE_SIZE); + memset(absolute_pointer(EMPTY_PGT), 0, PAGE_SIZE); return (pmd_t *) EMPTY_PGT; } pte_t __bad_page(void) { - memset((void *) EMPTY_PGE, 0, PAGE_SIZE); + memset(absolute_pointer(EMPTY_PGE), 0, PAGE_SIZE); return pte_mkdirty(mk_pte(virt_to_page(EMPTY_PGE), PAGE_SHARED)); } @@ -236,33 +235,26 @@ callback_init(void * kernel_end) return kernel_end; } - -#ifndef CONFIG_DISCONTIGMEM /* * paging_init() sets up the memory map. */ void __init paging_init(void) { - unsigned long zones_size[MAX_NR_ZONES] = {0, }; - unsigned long dma_pfn, high_pfn; + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; + unsigned long dma_pfn; dma_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; - high_pfn = max_pfn = max_low_pfn; + max_pfn = max_low_pfn; - if (dma_pfn >= high_pfn) - zones_size[ZONE_DMA] = high_pfn; - else { - zones_size[ZONE_DMA] = dma_pfn; - zones_size[ZONE_NORMAL] = high_pfn - dma_pfn; - } + max_zone_pfn[ZONE_DMA] = dma_pfn; + max_zone_pfn[ZONE_NORMAL] = max_pfn; /* Initialize mem_map[]. */ - free_area_init(zones_size); + free_area_init(max_zone_pfn); /* Initialize the kernel's ZERO_PGE. */ - memset((void *)ZERO_PGE, 0, PAGE_SIZE); + memset(absolute_pointer(ZERO_PGE), 0, PAGE_SIZE); } -#endif /* CONFIG_DISCONTIGMEM */ #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM) void @@ -287,5 +279,26 @@ mem_init(void) set_max_mapnr(max_low_pfn); high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); memblock_free_all(); - mem_init_print_info(NULL); } + +static const pgprot_t protection_map[16] = { + [VM_NONE] = _PAGE_P(_PAGE_FOE | _PAGE_FOW | + _PAGE_FOR), + [VM_READ] = _PAGE_P(_PAGE_FOE | _PAGE_FOW), + [VM_WRITE] = _PAGE_P(_PAGE_FOE), + [VM_WRITE | VM_READ] = _PAGE_P(_PAGE_FOE), + [VM_EXEC] = _PAGE_P(_PAGE_FOW | _PAGE_FOR), + [VM_EXEC | VM_READ] = _PAGE_P(_PAGE_FOW), + [VM_EXEC | VM_WRITE] = _PAGE_P(0), + [VM_EXEC | VM_WRITE | VM_READ] = _PAGE_P(0), + [VM_SHARED] = _PAGE_S(_PAGE_FOE | _PAGE_FOW | + _PAGE_FOR), + [VM_SHARED | VM_READ] = _PAGE_S(_PAGE_FOE | _PAGE_FOW), + [VM_SHARED | VM_WRITE] = _PAGE_S(_PAGE_FOE), + [VM_SHARED | VM_WRITE | VM_READ] = _PAGE_S(_PAGE_FOE), + [VM_SHARED | VM_EXEC] = _PAGE_S(_PAGE_FOW | _PAGE_FOR), + [VM_SHARED | VM_EXEC | VM_READ] = _PAGE_S(_PAGE_FOW), + [VM_SHARED | VM_EXEC | VM_WRITE] = _PAGE_S(0), + [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = _PAGE_S(0) +}; +DECLARE_VM_GET_PAGE_PROT |