K 10
svn:author
V 5
sephe
K 8
svn:date
V 27
2016-05-30T08:50:33.864419Z
K 7
svn:log
V 205
hyperv/et: Make sure only one event timer will be registered

This nullifies the need to use softc.

MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D6591

END