building xen domU linux kernel

descr

latest available TMEM kernel was 5.2.21 but that would be too old.

manually

eventually grab the latest longterm kernel

tbd

scripted

wget https://pub.nethence.com/bin/xen/buildU.ksh
chmod +x buildU.ksh
./buildU.ksh linux-x.x.x.tar
#./buildU.ksh linux-5.16.20.tar reiser4-for-5.16.patch.gz