From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: Setting intel_iommu, iommu, hugepagesz, hugepages
Date: Thu, 13 Dec 2018 21:27:47 -0800
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On Fri, 14 Dec 2018 05:16:47 +0000
"Dipesh Gorashia (dipeshg)" <dipeshg@cisco.com> wrote:

> Hello,
> 
> I am on Ubuntu 18.04 and would like to set these linux boot params.
> 
> intel_iommu=on iommu=pt hugepagesz=2M hugepages=1024
> 
> I am bit new to this and was wondering if there is a guide that shows how to set these linux boot params.
> 
> Thanks,
> Dipesh


You should change GRUB_CMDLINE_LINUX in /etc/default/grub (otherwise change will get overwritten
on update).

https://help.ubuntu.com/community/Grub2/Setup#Configuring_GRUB_2