DragonFly hung up in Vmware

[Dave Cuthbert]

Matthew Dillon wrote:
    It seems unlikely.  There should be no uses of cmpxchg if you build a UP
    kernel to run under vmware.
Hm... this isn't emitted by the compiler under normal circumstances? 
According to [1], this is a 486+ instruction.  Then again, it could be 
like, say, xlat (which I've never seen a compiler emit).

[1] 
http://www.iro.umontreal.ca/~feeley/cours/ift2240/doc/assembly/cmpxchg.html