Linux – Self-built kernel: failed to mount /dev: No such device

I am trying to install a Linux kernel (3.8.1) from source in a Fedora distribution.
The kernel is a vanilla one.
I follow the kernel's build instructions closely that is:

make menuconfig
make
sudo make modules_install install
sudo grub2-mkconfig -o /boot/grub2/grub.cfg

Everything in /boot seems fine.
I can see System.map, initramfs, and vmlinuz for the newly compiled kernel.
The vmlinuz link points to vmlinuz-3.8.1.
There are multiple other kernels installed including an Ubuntu one.
grub2 recognises all of them and I can boot to each one of them.

When I reboot I see all kernels as menu entries and choose 3.8.1.

Then I see this message:

early console in decompress_kernel
decompressing Linux... parsing ELF ... done
Booting the kernel.
[1.687084] systemd [1]:failed to mount /dev:no such device
[1.687524] systemd [1]:failed to mount /dev:no such device

Solution:

All three posted responses provide the solution. CONFIG_DEVTMPFS was in fact causing the issue. I copied a working kernel's /boot/config-… into the root of the source tree as .config and executed the standard commands for building the kernel also shown above.