diff options
Diffstat (limited to 'arch/s390/mm/init.c')
| -rw-r--r-- | arch/s390/mm/init.c | 42 |
1 files changed, 17 insertions, 25 deletions
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index eb6ebfef134a..cfd9b8f7a523 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -108,16 +108,23 @@ void __init paging_init(void) unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE; static const int ssm_mask = 0x04000000L; unsigned long ro_start_pfn, ro_end_pfn; + unsigned long zones_size[MAX_NR_ZONES]; ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata); ro_end_pfn = PFN_UP((unsigned long)&__end_rodata); + memset(zones_size, 0, sizeof(zones_size)); + zones_size[ZONE_DMA] = max_low_pfn; + free_area_init_node(0, &contig_page_data, zones_size, + __pa(PAGE_OFFSET) >> PAGE_SHIFT, + zholes_size); + /* unmap whole virtual address space */ pg_dir = swapper_pg_dir; - for (i=0;i<KERNEL_PGD_PTRS;i++) - pmd_clear((pmd_t*)pg_dir++); + for (i = 0; i < PTRS_PER_PGD; i++) + pmd_clear((pmd_t *) pg_dir++); /* * map whole physical memory to virtual memory (identity mapping) @@ -129,12 +136,9 @@ void __init paging_init(void) /* * pg_table is physical at this point */ - pg_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + pg_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE); - pg_dir->pgd0 = (_PAGE_TABLE | __pa(pg_table)); - pg_dir->pgd1 = (_PAGE_TABLE | (__pa(pg_table)+1024)); - pg_dir->pgd2 = (_PAGE_TABLE | (__pa(pg_table)+2048)); - pg_dir->pgd3 = (_PAGE_TABLE | (__pa(pg_table)+3072)); + pmd_populate_kernel(&init_mm, (pmd_t *) pg_dir, pg_table); pg_dir++; for (tmp = 0 ; tmp < PTRS_PER_PTE ; tmp++,pg_table++) { @@ -143,8 +147,8 @@ void __init paging_init(void) else pte = pfn_pte(pfn, PAGE_KERNEL); if (pfn >= max_low_pfn) - pte_clear(&init_mm, 0, &pte); - set_pte(pg_table, pte); + pte_val(pte) = _PAGE_TYPE_EMPTY; + set_pte(pg_table, pte); pfn++; } } @@ -159,16 +163,6 @@ void __init paging_init(void) : : "m" (pgdir_k), "m" (ssm_mask)); local_flush_tlb(); - - { - unsigned long zones_size[MAX_NR_ZONES]; - - memset(zones_size, 0, sizeof(zones_size)); - zones_size[ZONE_DMA] = max_low_pfn; - free_area_init_node(0, &contig_page_data, zones_size, - __pa(PAGE_OFFSET) >> PAGE_SHIFT, - zholes_size); - } return; } @@ -219,7 +213,7 @@ void __init paging_init(void) continue; } - pm_dir = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE*4); + pm_dir = (pmd_t *) alloc_bootmem_pages(PAGE_SIZE * 4); pgd_populate(&init_mm, pg_dir, pm_dir); for (j = 0 ; j < PTRS_PER_PMD ; j++,pm_dir++) { @@ -228,7 +222,7 @@ void __init paging_init(void) continue; } - pt_dir = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); + pt_dir = (pte_t *) alloc_bootmem_pages(PAGE_SIZE); pmd_populate_kernel(&init_mm, pm_dir, pt_dir); for (k = 0 ; k < PTRS_PER_PTE ; k++,pt_dir++) { @@ -236,10 +230,8 @@ void __init paging_init(void) pte = pfn_pte(pfn, __pgprot(_PAGE_RO)); else pte = pfn_pte(pfn, PAGE_KERNEL); - if (pfn >= max_low_pfn) { - pte_clear(&init_mm, 0, &pte); - continue; - } + if (pfn >= max_low_pfn) + pte_val(pte) = _PAGE_TYPE_EMPTY; set_pte(pt_dir, pte); pfn++; } |