title: what is a store buffer?
body: <p>can anyone explain what is load buffer and how it's different from invalidation queues. and also difference between store buffers and write combining buffers?
  The paper by Paul E Mckenny <a href="http://www.rdrop.com/users/paulmck/scalability/paper/whymb.2010.07.23a.pdf" rel="noreferrer">http://www.rdrop.com/users/paulmck/scalability/paper/whymb.2010.07.23a.pdf</a>  explains very nicely about the store buffers and invalidation queues but unfortunately doesn't talk about write combining buffers</p>