K 10
svn:author
V 5
mmacy
K 8
svn:date
V 27
2018-05-14T00:21:04.172910Z
K 7
svn:log
V 298
hwpmc: fix load/unload race and vm map LOR

- fix load/unload race by allocating the per-domain list structure at boot

- fix long extant vm map LOR by replacing pmc_sx sx_slock with global_epoch
  to protect the liveness of elements of the pmc_ss_owners list

Reported by:	pho
Approved by:	sbruno

END