Uploaded image for project: 'XenServer Org'
  1. XenServer Org
  2. XSO-1022

Dom0 Kernel needs 64 bit EFI-FB support added

    XMLWordPrintable

Details

    • Improvement
    • Resolution: Unresolved
    • Blocker
    • None
    • 8.2
    • Dom0

    • Xen 4.13.4 (and newer).

      Intel server with UEFI boot and 64 bit EFI FB BAR (like Intel NUC 11) and Linux Kernel.

       

    Description

      All Linux kernels before 5.17 do NOT include needed 64bit EFI FB support in Dom0 Linux kernel.

      Xen 4.13 passes this info to Dom0 Linux kernel but the kernel ignores it. This results in a BLANK screen after Xen hands off the local console to the kernel. Install is not possible due to lack of EFI FB (VGA) console or serial port.

      Newer machines (like Intel NUC 11) require 64 bit BAR for EFI Frame Buffer console support.

      Simple patch from approved 5.17 code solves the problem without impacting older machines supporting only 32bit EFI FB BAR.

      Tested on Intel NUC11 (64bit BAR) and Supermicro X9 (32bit BAR) machines with UEFI boot using XCP-ng and patched 4.19 Linux kernel.

       

      Attachments

        Activity

          People

            Unassigned Unassigned
            andrew Andrew Lindh
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated: