Can you verify what kernel you're booted to?

$ uname -r

By default, Linodes boot to Linode-supplied kernels. I don't know if hugepages are enabled in Linode's kernel (its configuration is in /proc/config.gz if you wish to check). If you wish to boot to a kernel supplied by your distribution, you'll want to make some changes to your Linode's configuration profile as documented at https://linode.com/docs/tools-reference … -with-kvm/">https://linode.com/docs/tools-reference/custom-kernels-distros/run-a-distribution-supplied-kernel-with-kvm/

What's your use case for hugepages on the guest, out of curiousity?