diff options
| -rw-r--r-- | arch/x86/mm/init.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index c7a47603537f..e26f5c5c6565 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -596,7 +596,7 @@ static unsigned long __init get_new_step_size(unsigned long step_size) static void __init memory_map_top_down(unsigned long map_start, unsigned long map_end) { - unsigned long real_end, start, last_start; + unsigned long real_end, last_start; unsigned long step_size; unsigned long addr; unsigned long mapped_ram_size = 0; @@ -609,7 +609,7 @@ static void __init memory_map_top_down(unsigned long map_start, step_size = PMD_SIZE; max_pfn_mapped = 0; /* will get exact value next */ min_pfn_mapped = real_end >> PAGE_SHIFT; - last_start = start = real_end; + last_start = real_end; /* * We start from the top (end of memory) and go to the bottom. @@ -618,6 +618,8 @@ static void __init memory_map_top_down(unsigned long map_start, * for page table. */ while (last_start > map_start) { + unsigned long start; + if (last_start > step_size) { start = round_down(last_start - 1, step_size); if (start < map_start) |