title: Change the Size of SWIOTLB Permanently in Linux Kernel
body: <p>I work on Linux Debian with 64bit kernel version 4.19.0 and default SWIOTLB size 64M.
  For the needs of a kernel driver that I develop I would like to use more than 64M SWIOTLB.
  Is there any way to change the SWIOTLB size permanently.
  I keep searching but it is not clear to me.</p>
  
  <p>Thank you! </p>