Pratt being Ian Pratt the founder of XenSource.The requirement for a modified operating system will loosen with Intel's coming Vanderpool Technology, or VT, due in 2005, Pratt said. It will mean unmodified operating systems will run on Xen, though not as fast as modified ones. That means Windows will run on Xen even though open-source programmers don't have access to change Windows itself.
Currently Xen works with Linux on computers using x86 processors such as Intel's Pentium, but efforts are under way to extend it into other domains. This week, AMD announced it's helping to bring Xen to 64-bit x86 chips such as its Opteron, future generations of which, employing "Pacifica" technology, will have new virtualization support.