diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 0058feaa65e5078ba466a4995a516318752ea10a..8ebad247ce82c597b3494d6de1dffc868de54410 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -483,6 +483,10 @@ static void __init bootmem_init(void)
 			continue;
 		default:
 			/* Not usable memory */
+			if (start > min_low_pfn && end < max_low_pfn)
+				reserve_bootmem(boot_mem_map.map[i].addr,
+						boot_mem_map.map[i].size,
+						BOOTMEM_DEFAULT);
 			continue;
 		}