** Tags added: kernel-hyper-v

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https://bugs.launchpad.net/bugs/1812428

Title:
  [linux-azure] Don't wait in hvnd_query_gid after interface is  already
  bound to ND

Status in linux-azure package in Ubuntu:
  New

Bug description:
  The user mode may call hvnd_query_gid multiple times, and from
  multiple user contexts at the same time. If it's already bound, return
  GID and do not wait.

  This patch will not go upstream, because it's for Azure ND Infiniband.
  Due to this, the patch should be applied as SAUCE.

  The patch is needed in linux-azure for 16.04 and 18.04.  It is also
  being requested in the 4.18 azure based kernel.

  The patch is attached to this email.  Do you want and SRU request sent
  to the mailing list as well or is just attaching it here suffice?

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