assuming same NetBSD release or at least branch – no need to build tools
make sure you have enough RAM (at least 2GB I would say, but 8GB is probably preferable), and eventually increase the number of vcpus
diff -Naur GENERIC $kernel > $kernel.diff ls -lhF ../compile/$kernel/ rm -rf ../compile/$kernel/ config $kernel #/usr/tooldir/bin/nbconfig GENERIC_XENHVM cd ../compile/$kernel/ dmesg | grep -E [v]?cpu time make -j16 depend >/dev/null && echo DEPEND #/usr/tooldir/bin/nbmake #make clean time make -j16 > /root/$kernel.log && echo BUILT #/usr/tooldir/bin/nbmake #238.26s
For bare-metal
mv /netbsd /netbsd.old cp /usr/src/sys/arch/`uname -m`/compile/$kernel/netbsd / shutdown -r now
For a XEN host
scp bsdbuild:/usr/src/sys/arch/amd64/compile/ALTQNPF/netbsd netbsd.altqnpf scp bsdbuild:/usr/src/sys/arch/amd64/compile/GENERICMULTI/netbsd netbsd.genericmulti
XEN guest
shutdown -p now
and change its settings to point to the new kernel,
kernel = "/data/kernels/netbsd8/altqnpf"
At system startup, watch the console and check,
dmesg | grep ^NetBSD uname -a
make[1]: don't know how to make absvdi2.c. Stop
==> either use config -s
or put your sources folder in the default location (/usr/src
)
https://www.netbsd.org/docs/guide/en/chap-kernel.html
https://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/BUILDING
ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/share/mk/bsd.README
this is not required anymore – it’s built in already
Enabling NPF
pseudo-device npf # NPF packet filter options NPF_EXT_LOG options NPF_EXT_NORMALISE options BPFJIT options SLJIT