diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 1ff8dce..3b48205 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -142,8 +142,7 @@
 	/*
 	 * Get IO TLB memory from the low pages
 	 */
-	io_tlb_start = alloc_bootmem_low_pages_limit(io_tlb_nslabs *
-					     (1 << IO_TLB_SHIFT), 0x100000000);
+	io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs * (1 << IO_TLB_SHIFT));
 	if (!io_tlb_start)
 		panic("Cannot allocate SWIOTLB buffer");
 	io_tlb_end = io_tlb_start + io_tlb_nslabs * (1 << IO_TLB_SHIFT);