Every other time SMP booting fails

[David Leimbach]

Could there be a race condition in the vm?  I have been seeing problems right at the moment the
second CPU in my box is started at boot time.  Its not every time either.  I believe the file was vm_allloc
and it fails an assertion involving the ownership of Giant.

I can provide more details this evening but I have been noticing this at least all weekend.

- Dave