Reorganize papers related to virtual machines

operating_systems/README.md

@@ -1,12 +1,10 @@
 ## Operating Systems 
 
-* [Xen and the Art of Virtualization](http://www.cl.cam.ac.uk/research/srg/netos/papers/2003-xensosp.pdf)
 
 * [The operating system: should there be one?](http://plosworkshop.org/2013/preprint/kell.pdf)
 
 * [The Scalable Commutativity Rule: Designing Scalable Software for Multicore Processors](https://people.csail.mit.edu/nickolai/papers/clements-sc.pdf)
 
-* :scroll: [Live Migration of Virtual Machines](live-migration-of-virtual-machines.pdf)
 
 * :scroll: [Jails: Confining the omnipotent root.](https://us-east.manta.joyent.com/bcantrill/public/ppwl-cantrill-jails.pdf)
 

virtual_machines/README.md

@@ -1,5 +1,10 @@
 * [One VM to Rule Them All](http://lafo.ssw.uni-linz.ac.at/papers/2013_Onward_OneVMToRuleThemAll.pdf)
     - This is an exciting VM implementation that incorporates AST node rewriting and an optimizing compiler. It enables the implementation of, and excellent performance for, a wide range of languages.
+
+* [Xen and the Art of Virtualization](http://www.cl.cam.ac.uk/research/srg/netos/papers/2003-xensosp.pdf)
+
 * [A Comparison of Software and Hardware Techniques for x86
   Virtualization](http://www.vmware.com/pdf/asplos235_adams.pdf)
     - virtualization theory background
+
+* :scroll: [Live Migration of Virtual Machines](live-migration-of-virtual-machines.pdf)