bpfjit and npf on Xen

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

In absence of progress on IPFilter panics and lockups (see elsewhere), I'm 
starting to play with npf on -7 using a Xen domU. As far as I'm aware, 
loadable modules aren't support on -7 and Xen. Therefore, I built a kernel 
with:
pseudo-device  npf                     # NPF packet filter

This successfully stopped the device not configured errors:
npfctl: cannot open '/dev/npf': Device not configured

But:
1# /etc/rc.d/npf start
Enabling NPF.
npfctl: error loading the bpfjit module; performance will be degraded: 
Function not implemented
npfctl: To disable this warning `set bpf.jit off' in /etc/npf.conf
2# modload bpfjit
modload: Function not implemented

I can't see any way to build bpfjit into the kernel though:
# grep jit /usr/src/7.0/sys/arch/amd64/conf/GENERIC| grep -v Fujitsu
#


--
Stephen