Uploaded image for project: 'OpenShift Virtualization'
  1. OpenShift Virtualization
  2. CNV-34963

Add Genoa cpu model support

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Done-Errata
    • Icon: Normal Normal
    • CNV v4.15.2
    • None
    • CNV Virtualization
    • None
    • 0.42
    • False
    • Hide

      None

      Show
      None
    • False
    • ---
    • ---
    • No

      Description of problem:

      Genoa cpu model support was added in BZ2094913
      Requesting a backport of this newer cpu model to the EUS versions OpenShift Virtualization is using (qemu/libvirt). 

      Version-Release number of selected component (if applicable):

      4.13+ / 9.2.z

      Additional info:

      The Genoa cpu model provides new AVX512 instructions that can be important for performance as well as a new "auto-ibrs" instruction. Without this new model support, default cpu-model behavior will fall back to Milan and emulate these instructions if an application uses them.
      
      https://github.com/qemu/qemu/commit/166b1741884dd4fd7090b753cd7333868457a29b

      Libvirt trackers:
      RHEL-7568
      RHEL-15333

            sgott@redhat.com Stuart Gott
            jhopper@redhat.com Jenifer Abrams
            Zhe Peng Zhe Peng
            Votes:
            0 Vote for this issue
            Watchers:
            5 Start watching this issue

              Created:
              Updated:
              Resolved: