Display updated on for Entering Long Mode post

_posts/2015-08-25-entering-longmode.md

@@ -3,6 +3,7 @@ layout: post
 title: 'Entering Long Mode'
 category: 'rust-os'
 redirect_from: "/rust-os/2015/08/25/entering-longmode/"
+updated: 2015-10-29 00:00:00 +0000
 ---
 In the [previous post] we created a minimal multiboot kernel. It just prints `OK` and hangs. The goal is to extend it and call 64-bit [Rust] code. But the CPU is currently in [protected mode] and allows only 32-bit instructions and up to 4GiB memory. So we need to setup _Paging_ and switch to the 64-bit [long mode] first.
 

index.html

@@ -22,7 +22,12 @@ title: Home
       </a>
     </h1>
 
-    <time datetime="{{ post.date | date_to_xmlschema }}" class="post-date">{{ post.date | date_to_string }}</time>
+    <span class="post-date">
+      <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date_to_string }}</time>
+      {% if post.updated %}
+        (updated on {{ post.updated | date_to_string }})
+      {% endif %}
+    </span>
 
     {% if post.content contains '<!--more-->' %}
 	    {{ post.content | split:'<!--more-->' | first }}