K 10
svn:author
V 5
sephe
K 8
svn:date
V 27
2017-01-05T04:59:37.248076Z
K 7
svn:log
V 453
MFC 309085

    hyperv/hn: Fix primary channel revocation

    Since hypervisor will not drain the TX bufring, once the channels are
    revoked:
    - Setup vmbus orphan handler properly.
    - Make sure that suspension will not wait the TX bufring draining
      forever.
    - GC the pending TX descs on detach path, before freeing the busdma
      stuffs.

    Sponsored by:   Microsoft
    Differential Revision:  https://reviews.freebsd.org/D8559

END