seems I finally found what upset kqemu on amd64 SMP... shared gdt! (please test patch :)

[Bakul Shah]

> applied the patch and kqemu works now with quad core CPU running
> 7-stable amd64 smp. However, running a win2k3 guest results in many
> "fpudna in kernel mode!" kernel messages, regardless if -kernel-mode is
> used or not (but with kqemu-user enabled).
> What needs to be done to fix that?

Comment it out in amd64/amd64/trap.c!