On x86 architecture supporting VT-d, the IOMMU manages the access control policy between the hardware devices and some
of the system critical units such as the memory.
To ensure that iommu=force is added as a kernel command line
argument to newly installed kernels, add iommu=force to the
default Grub2 command line for Linux operating systems. Modify the line within
/etc/default/grub as shown below:
GRUB_CMDLINE_LINUX="... iommu=force ..."
Run the following command to update command line for already installed kernels:# update-grub