diff options
| -rw-r--r-- | arch/x86/kernel/e820.c | 26 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 8 |
2 files changed, 11 insertions, 23 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index dd2f07ae9d0c..46201deee923 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -184,9 +184,9 @@ void __init e820_print_map(char *who) * overwritten in the same location, starting at biosmap. * * The integer pointed to by pnr_map must be valid on entry (the - * current number of valid entries located at biosmap) and will - * be updated on return, with the new number of valid entries - * (something no more than max_nr_map.) + * current number of valid entries located at biosmap). If the + * sanitizing succeeds the *pnr_map will be updated with the new + * number of valid entries (something no more than max_nr_map). * * The return value from sanitize_e820_map() is zero if it * successfully 'sanitized' the map entries passed in, and is -1 @@ -561,23 +561,15 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type, void __init update_e820(void) { - u32 nr_map; - - nr_map = e820.nr_map; - if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr_map)) + if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map)) return; - e820.nr_map = nr_map; printk(KERN_INFO "e820: modified physical RAM map:\n"); e820_print_map("modified"); } static void __init update_e820_saved(void) { - u32 nr_map; - - nr_map = e820_saved.nr_map; - if (sanitize_e820_map(e820_saved.map, ARRAY_SIZE(e820_saved.map), &nr_map)) - return; - e820_saved.nr_map = nr_map; + sanitize_e820_map(e820_saved.map, ARRAY_SIZE(e820_saved.map), + &e820_saved.nr_map); } #define MAX_GAP_END 0x100000000ull /* @@ -898,11 +890,9 @@ early_param("memmap", parse_memmap_opt); void __init finish_e820_parsing(void) { if (userdef) { - u32 nr = e820.nr_map; - - if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr) < 0) + if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), + &e820.nr_map) < 0) early_panic("Invalid user supplied memory map"); - e820.nr_map = nr; printk(KERN_INFO "e820: user-defined physical RAM map:\n"); e820_print_map("user"); diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index ab4734e5411d..c4648adadd7d 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -431,15 +431,13 @@ static void __init parse_setup_data(void) pa_data = boot_params.hdr.setup_data; while (pa_data) { - u32 data_len, map_len, data_type; + u32 data_len, data_type; - map_len = max(PAGE_SIZE - (pa_data & ~PAGE_MASK), - (u64)sizeof(struct setup_data)); - data = early_memremap(pa_data, map_len); + data = early_memremap(pa_data, sizeof(*data)); data_len = data->len + sizeof(struct setup_data); data_type = data->type; pa_next = data->next; - early_iounmap(data, map_len); + early_iounmap(data, sizeof(*data)); switch (data_type) { case SETUP_E820_EXT: |