diff --git a/mm/memtest.c b/mm/memtest.c
index 20e8361..6bcf7d8 100644
--- a/mm/memtest.c
+++ b/mm/memtest.c
@@ -31,10 +31,8 @@
 
 static void __init reserve_bad_mem(u64 pattern, phys_addr_t start_bad, phys_addr_t end_bad)
 {
-	printk(KERN_INFO "  %016llx bad mem addr %010llx - %010llx reserved\n",
-	       (unsigned long long) pattern,
-	       (unsigned long long) start_bad,
-	       (unsigned long long) end_bad);
+	pr_info("  %016llx bad mem addr %pa - %pa reserved\n",
+		cpu_to_be64(pattern), &start_bad, &end_bad);
 	memblock_reserve(start_bad, end_bad - start_bad);
 }
 
@@ -79,10 +77,8 @@
 		this_start = clamp(this_start, start, end);
 		this_end = clamp(this_end, start, end);
 		if (this_start < this_end) {
-			printk(KERN_INFO "  %010llx - %010llx pattern %016llx\n",
-			       (unsigned long long)this_start,
-			       (unsigned long long)this_end,
-			       (unsigned long long)cpu_to_be64(pattern));
+			pr_info("  %pa - %pa pattern %016llx\n",
+				&this_start, &this_end, cpu_to_be64(pattern));
 			memtest(pattern, this_start, this_end - this_start);
 		}
 	}
@@ -113,7 +109,7 @@
 	if (!memtest_pattern)
 		return;
 
-	printk(KERN_INFO "early_memtest: # of tests: %d\n", memtest_pattern);
+	pr_info("early_memtest: # of tests: %u\n", memtest_pattern);
 	for (i = memtest_pattern-1; i < UINT_MAX; --i) {
 		idx = i % ARRAY_SIZE(patterns);
 		do_one_pass(patterns[idx], start, end);