Comment 17 for bug 1519897

From the ubuntu-trusty git repository:

$ git --format=oneline Ubuntu-3.13.0-77.121.. -- drivers/hv

04d1fd1012796e714f3b291fc0487e45d2fbd9ba Drivers: hv: vmbus: Fix a Host signaling bug
952f5d0a5b0f3b032902537a1aeafdee75ac69a6 Drivers: hv: vmbus: Fix a siganlling host signalling issue
c402db4908545dbe6daa1aa7494be37d6b3f4ee3 Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl()
14df727b252b7f20ffb156edab89d81ebb2b31b5 Drivers: hv: vmbus: Suport an API to send packet with additional control
cb5c01b81dc4b08c9eccd40b2f626a3c7bced6f5 Drivers: hv: vmbus: Suport an API to send pagebuffers with additional control
ee8c7cb858c2e7f2d81d9b87fdfb6ee292b341a9 Drivers: hv: vmbus: Implement per-CPU mapping of relid to channel
a84dc0bfcd6b8d9a217e7c73e89b1e3ed44ac3f8 Drivers: hv: Eliminate the channel spinlock in the callback path