K 10
svn:author
V 4
mmel
K 8
svn:date
V 27
2018-01-28T15:02:49.466866Z
K 7
svn:log
V 745
Fix handling of I-cache sync operations

- pmap_enter_object() can be used for mapping of executable pages, so it's
  necessary to handle I-cache synchronization within it.

- Fix race in I-cache synchronization in pmap_enter(). The current code firstly
  maps given page to target VA and then do I-cache sync on it. This causes
  race, because this mapping become visible to other threads, before I-cache
  is synced.
  Do sync I-cache firstly (by using DMAP VA) and then map it to target VA.

- ARM64 ARM permits implementation of aliased (AIVIVT, VIPT) I-cache, but we
  can use different that final VA for flushing it. So we should use full
  I-cache flush on affected platforms. For now, and as temporary solution,
  use full flush always.

END