> vhost-scsi keeps the response and bounce-buffer iovecs until the backend
> completes the command. If userspace changes the vring addresses while the
> command is in flight, the completion data is copied through the old iovecs
> while vhost_add_used() updates the new used ring. The guest then no longer
> sees the completion.
>
> Reject changes to the vring addresses while a backend is attached to the
> queue. Keep accepting the current addresses so userspace can update
> VHOST_VRING_F_LOG or log_guest_addr without stopping the backend. Queues
> that have not been attached retain the existing setup behavior; userspace
> must detach the backend before changing their addresses.
>
> Fixes: 057cbf49a1f0 ("tcm_vhost: Initial merge for vhost level target fabric
> driver")
> Signed-off-by: Jia Jia <[email protected]>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review ยท
https://sashiko.dev/#/patchset/[email protected]?part=1
