diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/init_32.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 3c76d194fd2..e6e34c7dcab 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -165,16 +165,25 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) pmd = one_md_table_init(pgd); if (pfn >= max_low_pfn) continue; - for (pmd_idx = 0; pmd_idx < PTRS_PER_PMD && pfn < max_low_pfn; pmd++, pmd_idx++) { + for (pmd_idx = 0; + pmd_idx < PTRS_PER_PMD && pfn < max_low_pfn; + pmd++, pmd_idx++) { unsigned int address = pfn * PAGE_SIZE + PAGE_OFFSET; - /* Map with big pages if possible, otherwise create normal page tables. */ + /* Map with big pages if possible, otherwise + create normal page tables. */ if (cpu_has_pse) { - unsigned int address2 = (pfn + PTRS_PER_PTE - 1) * PAGE_SIZE + PAGE_OFFSET + PAGE_SIZE-1; - if (is_kernel_text(address) || is_kernel_text(address2)) - set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE_EXEC)); - else - set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE)); + unsigned int address2; + pgprot_t prot = PAGE_KERNEL_LARGE; + + address2 = (pfn + PTRS_PER_PTE - 1) * PAGE_SIZE + + PAGE_OFFSET + PAGE_SIZE-1; + + if (is_kernel_text(address) || + is_kernel_text(address2)) + prot = PAGE_KERNEL_LARGE_EXEC; + + set_pmd(pmd, pfn_pmd(pfn, prot)); pfn += PTRS_PER_PTE; } else { @@ -183,10 +192,12 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) for (pte_ofs = 0; pte_ofs < PTRS_PER_PTE && pfn < max_low_pfn; pte++, pfn++, pte_ofs++, address += PAGE_SIZE) { + pgprot_t prot = PAGE_KERNEL; + if (is_kernel_text(address)) - set_pte(pte, pfn_pte(pfn, PAGE_KERNEL_EXEC)); - else - set_pte(pte, pfn_pte(pfn, PAGE_KERNEL)); + prot = PAGE_KERNEL_EXEC; + + set_pte(pte, pfn_pte(pfn, prot)); } } } |