On Wed, 28 Sep 2022 06:48:33 -0700 Gaurav Kohli wrote:
> During vm boot, there might be possibility that vf registration
> call comes before the vf association from host to vm.
>
> And this might break netvsc vf path, To prevent the same block
> vf registration until vf bind message comes from host.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 00d7ddba11436 ("hv_netvsc: pair VF based on serial number")
> Signed-off-by: Gaurav Kohli <gauravkohli@xxxxxxxxxxxxxxxxxxx>
Is it possible to add a timeout or such? Waiting for an external
event while holding rtnl lock seems a little scary.
The other question is - what protects the completion and ->vf_alloc
from races? Is there some locking? ->vf_alloc only goes from 0 to 1
and never back?
