K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2017-08-28T20:00:21.409160Z
K 7
svn:log
V 291
Mask doorbells while processing them.

This fixes interrupt storms on hardware using legacy level-triggered
interrupts, since doorbell processing could take time after interrupt
handler completion, that triggered extra interrupts in a loop.

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.

END