diff options
| -rw-r--r-- | arch/x86/mm/init_64.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 122bcef222f..a25cc6fa220 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -763,6 +763,20 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, end_pfn = end>>PAGE_SHIFT; nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0); + /* try to merge same page size and continuous */ + for (i = 0; nr_range > 1 && i < nr_range - 1; i++) { + unsigned long old_start; + if (mr[i].end != mr[i+1].start || + mr[i].page_size_mask != mr[i+1].page_size_mask) + continue; + /* move it */ + old_start = mr[i].start; + memmove(&mr[i], &mr[i+1], + (nr_range - 1 - i) * sizeof (struct map_range)); + mr[i].start = old_start; + nr_range--; + } + for (i = 0; i < nr_range; i++) printk(KERN_DEBUG " %010lx - %010lx page %s\n", mr[i].start, mr[i].end, |