Multi Channel DMA for PCI Express* Intel® FPGA IP Design Example User Guide

ID 683517
Date 12/01/2021
Public

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3.5.2.5.1.2. Set the Boot Parameters

Follow the below step to modify the default hugepages setting in grub files:

  1. Edit /etc/default/grub file.
    1. Append the highlighted parameters in GRUB_CMDLINE_LINUX line in /etc/default/grub file.
      GRUB_CMDLINE_LINUX=" rd.lvm.lv=centos/root\
       rd.lvm.lv=centos/swap rhgb default_hugepagesz=1G hugepagesz=1G\
       hugepages=40 panic=1 iommu=pt
    2. For AMD system, MSIX mode add the following to the GRUB file iommu=soft.
  2. Generate GRUB configuration files:
    To check whether the boot system is legacy or EFI based, use the following file.
    $ls -al /sys/firmware/efi
    If this file is present, then the boot system is EFI based; otherwise, legacy:
    • If it is a legacy system, execute the following command:
      $ grub2-mkconfig -o /boot/grub2/grub.cfg
    • If it is an EFI based system, execute the following command:
      $ grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
  3. Reboot the system.
  4. Verify the above changes:
    $ cat /proc/cmdline

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