Hi, The patch has been in v4.15.y and v4.16.y, but not in v4.14.y:
de0aa7b2f97d ("PCI: hv: Fix 2 hang issues in hv_compose_msi_msg()")
The second issue described in the changelog of the commit can happen to v4.14.y too. Since the v4.14.y is a longterm kernel, we should apply the patch to it.
I have verified the commit can be cherry-picked cleanly.
Thanks! -- Dexuan