• rhel-sst-virtualization-windows
    • ssg_virtualization
    • 8
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    • Yes
    • Red Hat Enterprise Linux
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    • Unspecified Release Note Type - Unknown
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      Goal

      Starting from Win11 the 3 rd party VF may support poll mode as a default mode, then the VF driver may not indicate RX packets and TX completions expecting them to be retrieved by polling threads.

      Starting from 2025 - the default mode of netkvm will be poll mode

      The goal is to make SRIOV failover compatible with these changes

      There are 2 changes in general:

      1. Protocol service - fix comparison of netkvmp executables
      2. Driver: disable poll mode in case of failover

      Acceptance Criteria

      Functionality of failover on 2025 server, Win11-23H2 and Win11-24H2

      see https://issues.redhat.com/browse/RHEL-31482 for acceptance

      If the virtio-net device is failover device, the printout "Poll mode tried and enabled" should never appear regardless number of CPUs/queues/registry setting.

        1. w11-24h2_before_migration.out
          106 kB
          Wenkang Ji
        2. wji-w11-24h2-cable-unplugged.png
          1.35 MB
          Wenkang Ji
        3. wji-w11-24h2-NIC-works.png
          935 kB
          Wenkang Ji

              yuri.benditovich Yuri Benditovich
              yuri.benditovich Yuri Benditovich
              Meirav Dean Meirav Dean
              Wenkang Ji Wenkang Ji
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                Created:
                Updated: