"kvm" accelerator not found.

[phipo <phipo.research%orange.fr@localhost>]

Hi,
I'm trying to work with KVM on Quad cores Opteron (AMD64), i ask me why 
amd64 start with no ACPI and no SMP ? option 4 at boot time, because on 
Intel architecture (32 bits) ACPI and SMP start fine.

I've compiled fine qemu's ports of pkgsrc (/usr/pkgsrc/emulators/qemu).
But when i try to start KVM's command :
the output display >> "kvm" accelerator not found. No accelerator found!

I don't know if i add parameters into /etc/rc.conf, for example > "kvm=YES".

The Question is how to use kvm on NetBSD 7.0RC3 ?

Regards
Philippe