On Wed, Mar 23, 2022 at 06:36:22PM +0100, Stefano Garzarella wrote: > The first patch fixes a virtio-spec violation. The other two patches > complete the driver configuration before using the VQs in the probe. > > The patch order should simplify backporting in stable branches. > > v3: > - re-ordered the patch to improve bisectability [MST] > > v2: https://lore.kernel.org/netdev/20220323084954.11769-1-sgarz...@redhat.com/ > v1: https://lore.kernel.org/netdev/20220322103823.83411-1-sgarz...@redhat.com/ > > Stefano Garzarella (3): > vsock/virtio: initialize vdev->priv before using VQs > vsock/virtio: read the negotiated features before using VQs > vsock/virtio: enable VQs early on probe > > net/vmw_vsock/virtio_transport.c | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > -- > 2.35.1 >
A subtle point is that we still drop events and rx packets during the window where DRIVER_OK has been set but vqs haven't been filled. This is acceptable because it's unavoidable and equivalent to events happening before DRIVER_OK is set. What this revision *does* fix is that vq used buffer notifications are no longer lost. Good. Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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