diff options
Diffstat (limited to 'arch/i386/mm/init.c')
| -rw-r--r-- | arch/i386/mm/init.c | 38 |
1 files changed, 12 insertions, 26 deletions
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index efd0bcdac65..4a5a914b343 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -435,16 +435,22 @@ u64 __supported_pte_mask __read_mostly = ~_PAGE_NX; * on Enable * off Disable */ -void __init noexec_setup(const char *str) +static int __init noexec_setup(char *str) { - if (!strncmp(str, "on",2) && cpu_has_nx) { - __supported_pte_mask |= _PAGE_NX; - disable_nx = 0; - } else if (!strncmp(str,"off",3)) { + if (!str || !strcmp(str, "on")) { + if (cpu_has_nx) { + __supported_pte_mask |= _PAGE_NX; + disable_nx = 0; + } + } else if (!strcmp(str,"off")) { disable_nx = 1; __supported_pte_mask &= ~_PAGE_NX; - } + } else + return -EINVAL; + + return 0; } +early_param("noexec", noexec_setup); int nx_enabled = 0; #ifdef CONFIG_X86_PAE @@ -552,18 +558,6 @@ static void __init test_wp_bit(void) } } -static void __init set_max_mapnr_init(void) -{ -#ifdef CONFIG_HIGHMEM - num_physpages = highend_pfn; -#else - num_physpages = max_low_pfn; -#endif -#ifdef CONFIG_FLATMEM - max_mapnr = num_physpages; -#endif -} - static struct kcore_list kcore_mem, kcore_vmalloc; void __init mem_init(void) @@ -590,14 +584,6 @@ void __init mem_init(void) } #endif - set_max_mapnr_init(); - -#ifdef CONFIG_HIGHMEM - high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1; -#else - high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1; -#endif - /* this will put all low memory onto the freelists */ totalram_pages += free_all_bootmem(); |