Ubuntu Kernel Build

The latest UBUNTU12 64bit kernel can be built using these instructions.

# To install a specific version:

sudo apt-get update
sudo apt-get install linux-image-3.2.0-56-generic linux-headers-3.2.0-56-generic

# Or if you want to install some more recent:

sudo apt-get update
sudo apt-get search linux-image (to find the latest -X-generic)
sudo apt-get install linux-image-3.8.0-36-generic

# Then reboot
sudo reboot

#
# Now build the apod module.
#
cd /tmp
mkdir ipod
cp -rp /share/emulab/emulab-stable/ipod/linux_mod .
cd linux_mod
sudo make
sudo make install
sudo depmod -a -v `uname -r`

#
# And build the openvswitch module
#
cd /tmp
tar zxf /share/openvswitch/openvswitch-2.1.0.tar.gz
cd openvswitch-2.1.0
./configure --with-linux=/lib/modules/`uname -r`/build
make
sudo make install
sudo make modules_install
sudo depmod -a -v `uname -r`
sudo ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
sudo /usr/local/share/openvswitch/scripts/ovs-ctl start
sudo ovs-vsctl --no-wait init
sudo /usr/local/share/openvswitch/scripts/ovs-ctl stop

#
# For the XEN image, update the last resort kernel/ramdisk links.
#
cd /boot
sudo ln -s vmlinuz-xenU vmlinuz-3.2.46 
sudo ln -s vmlinuz-3.2.46 vmlinuz-xenU 
sudo ln -s initrd.img-3.2.46 initrd-xenU

#
# For a single module build, like the UFS module.
#
cd /usr/src
cd linux kernel source
sudo cp /usr/src.old/linux-headers-3.2.0-56-generic/Module.symvers .
make oldconfig # it copies .config to ./
make prepare
make modules_prepare
make SUBDIRS=scripts/mod
make SUBDIRS=fs/ufs modules
cp fs/ufs/ufs.ko /lib/modules/3.2.0-56-generic/kernel/fs/ufs/ufs.ko
sudo depmod -a `uname -r`

#
# Specifically for a RW ufs.ko module in Ubuntu 14.04
# 
cd /tmp 
apt-get source linux-image-3.13.0-68-generic 
cd linux-3.13.0 
cp /usr/src/linux-headers-3.13.0-68-generic/Module.symvers . 
make oldconfig # it copies .config to ./ 
echo CONFIG_UFS_FS_WRITE=y >> .config 
make prepare 
make modules_prepare 
make SUBDIRS=scripts/mod 
make SUBDIRS=fs/ufs modules 
sudo cp fs/ufs/ufs.ko /lib/modules/3.13.0-68-generic/kernel/fs/ufs/ufs.ko
sudo strip -d /lib/modules/3.13.0-68-generic/kernel/fs/ufs/ufs.ko
sudo depmod -a `uname -r`