1 files changed, 14 insertions, 2 deletions

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index f9c863911038..e55408e96559 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -657,10 +657,13 @@ int __init arm_add_memory(u64 start, u64 size)
 
         /*
          * Ensure that start/size are aligned to a page boundary.
-         * Size is appropriately rounded down, start is rounded up.
+         * Size is rounded down, start is rounded up.
          */
-        size -= start & ~PAGE_MASK;
         aligned_start = PAGE_ALIGN(start);
+        if (aligned_start > start + size)
+                size = 0;
+        else
+                size -= aligned_start - start;
 
 #ifndef CONFIG_ARCH_PHYS_ADDR_T_64BIT
         if (aligned_start > ULONG_MAX) {
@@ -1046,6 +1049,15 @@ static int c_show(struct seq_file *m, void *v)
                 seq_printf(m, "model name\t: %s rev %d (%s)\n",
                            cpu_name, cpuid & 15, elf_platform);
 
+#if defined(CONFIG_SMP)
+                seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
+                           per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ),
+                           (per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100);
+#else
+                seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
+                           loops_per_jiffy / (500000/HZ),
+                           (loops_per_jiffy / (5000/HZ)) % 100);
+#endif
                 /* dump out the processor features */
                 seq_puts(m, "Features\t: ");