Changes and New Features

Linux Kernel Upstream Release Notes v6.8

Upstream Kernel 6.8

Internal Ref.

Feature

Description

Support Added in User Space Version

Support Added in Firmware Version

Core Features

3403931

Transitional Virtio-net Support Over vfio

[BlueField3] Introduced a vfio driver over virtio devices to support the legacy interface functionality for the VFs.

N/A

N/A

VDPA Features

3016493

Improve SW Assisted Live Migration Downtime

[ConnectX-6 DX and above] Added a feature that improves the downtime during live migration with qemu and kernel vdpa (mlx5_vdpa). Downtime is the period when traffic cannot work due to queue reconfiguration and migration. It is improved through the following changes:

  • During live migration, allowed re-mapping only of the virtqueue descriptor area instead of the whole VM memory which takes a long time

  • Introduced a virtqueue resume option to avoid virtqueue destruction and re-creation cycle which takes a long time

QEMU

xx.39.1002

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