diff options
Diffstat (limited to 'arch/x86/mm/init_64.c')
| -rw-r--r-- | arch/x86/mm/init_64.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index fc18be0f6f29..2b6b4a3c8beb 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -407,12 +407,12 @@ static unsigned long __meminit phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end, unsigned long page_size_mask, pgprot_t prot) { - unsigned long pages = 0; + unsigned long pages = 0, next; unsigned long last_map_addr = end; int i = pmd_index(address); - for (; i < PTRS_PER_PMD; i++, address += PMD_SIZE) { + for (; i < PTRS_PER_PMD; i++, address = next) { unsigned long pte_phys; pmd_t *pmd = pmd_page + pmd_index(address); pte_t *pte; @@ -426,6 +426,8 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end, break; } + next = (address & PMD_MASK) + PMD_SIZE; + if (pmd_val(*pmd)) { if (!pmd_large(*pmd)) { spin_lock(&init_mm.page_table_lock); @@ -449,7 +451,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end, * attributes. */ if (page_size_mask & (1 << PG_LEVEL_2M)) { - pages++; + last_map_addr = next; continue; } new_prot = pte_pgprot(pte_clrhuge(*(pte_t *)pmd)); @@ -462,7 +464,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end, pfn_pte(address >> PAGE_SHIFT, __pgprot(pgprot_val(prot) | _PAGE_PSE))); spin_unlock(&init_mm.page_table_lock); - last_map_addr = (address & PMD_MASK) + PMD_SIZE; + last_map_addr = next; continue; } @@ -482,11 +484,11 @@ static unsigned long __meminit phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, unsigned long page_size_mask) { - unsigned long pages = 0; + unsigned long pages = 0, next; unsigned long last_map_addr = end; int i = pud_index(addr); - for (; i < PTRS_PER_PUD; i++, addr = (addr & PUD_MASK) + PUD_SIZE) { + for (; i < PTRS_PER_PUD; i++, addr = next) { unsigned long pmd_phys; pud_t *pud = pud_page + pud_index(addr); pmd_t *pmd; @@ -495,8 +497,9 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, if (addr >= end) break; - if (!after_bootmem && - !e820_any_mapped(addr, addr+PUD_SIZE, 0)) { + next = (addr & PUD_MASK) + PUD_SIZE; + + if (!after_bootmem && !e820_any_mapped(addr, next, 0)) { set_pud(pud, __pud(0)); continue; } @@ -523,7 +526,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, * attributes. */ if (page_size_mask & (1 << PG_LEVEL_1G)) { - pages++; + last_map_addr = next; continue; } prot = pte_pgprot(pte_clrhuge(*(pte_t *)pud)); @@ -535,7 +538,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, set_pte((pte_t *)pud, pfn_pte(addr >> PAGE_SHIFT, PAGE_KERNEL_LARGE)); spin_unlock(&init_mm.page_table_lock); - last_map_addr = (addr & PUD_MASK) + PUD_SIZE; + last_map_addr = next; continue; } |