diff options
| -rw-r--r-- | arch/x86/kernel/setup.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index b3469898717..4ac01d0ce62 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -399,6 +399,7 @@ static void __init reserve_setup_data(void) struct setup_data *data; u64 pa_data; char buf[32]; + int found = 0; if (boot_params.hdr.version < 0x0209) return; @@ -409,9 +410,13 @@ static void __init reserve_setup_data(void) reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf); e820_update_range(pa_data, sizeof(*data)+data->len, E820_RAM, E820_RESERVED_KERN); + found = 1; pa_data = data->next; early_iounmap(data, sizeof(*data)); } + if (!found) + return; + sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); printk(KERN_INFO "extended physical RAM map:\n"); e820_print_map("reserve setup_data"); |