On Wed, 14 Oct 2026 19:42:52 +0000 Sandeep Penigalapati <[email protected]> wrote:
> This series collects fixes for the fail-safe PMD found while testing > live migration of a VF-backed sub-device (iavf) paired with a virtio-net > standby sub-device. > > - double release of the sub-device port on hot-unplug; > - NULL queue-release op on sub-devices that do not implement it; > - MAC address pool size off-by-one and replay of zeroed MAC slots; > - unsupported link-status control (-ENOTSUP) treated as fatal; > - sub-device removal not detected without the RMV interrupt (e.g. VFIO > device release), now handled through a bus device-event callback. > > > Sandeep Penigalapati (5): > net/failsafe: fix double release of sub-device port > net/failsafe: fix queue release without sub-device op > net/failsafe: fix MAC address pool size and replay > net/failsafe: ignore unsupported link status update > net/failsafe: detect sub-device removal via device event > > drivers/net/failsafe/failsafe_ether.c | 40 ++++++++++-- > drivers/net/failsafe/failsafe_ops.c | 24 ++++++- > drivers/net/failsafe/failsafe_private.h | 13 ++-- > drivers/net/failsafe/failsafe_rxtx.c | 83 +------------------------ > 4 files changed, 62 insertions(+), 98 deletions(-) > One related failsafe issue is that today tap is carrying some stubs only because failsafe doesn't handle ENOTSUP
