title: atomicity in 32/64 bit
body: <p>the question is about when does a 64bit load/store operations are considered to be atomic.</p>
  
  <ul>
  <li>if i have a 64bit processor, but i'm using 32bit OS. Will i have 64bit atomicity?</li>
  <li>if i'm using 64bit OS but running an 32bit application (using WoW64), will i have 64bit atomicity?</li>
  </ul>