Users Guide

Table Of Contents
1–Introduction
Linux Feature Limitations
Doc No. TD-000971 Rev. 1
January 29, 2021 Page 9 Copyright © 2021 Marvell
For adapters based on 578xx controllers, some of the most recent kernels
(for example, in SLES 15) have a security feature to prevent user space
access to physical memory above 1MB (IIRC). Consequently, the firmware
upgrade tool may not function properly.
To resolve this issue, do one of the following:
Add iomem=relaxed in the kernel command line during boot time.
Update grub.cfg file:
1. Change the GRUB_CMDLINE_LINUX_DEFAULT parameter to
iomem=relaxed in the /etc/default/grub.cfg file.
The location of this file varies depending on the Linux
distribution.
2. Issue the following command:
run cmd grub2-mkconfig -o /boot/grub2/grub.cfg
3. Reboot the server for the changes to take effect.