2. Where should we do eviction (detatch_pages())?  We aren't necessarily
   3  accessing the pages via a GART, so maybe we need some other threshold
   4  to put a cap on the # of pages that can be pin'd.
   5  . Use mm_shrinker to trigger unpinning pages.
   6  . This is mainly theoretical since most of these devices don't actually
   7    have swap or harddrive.
   8. GEM/shmem backed pages can have existing mappings (kernel linear map,
   9  etc..), which isn't really ideal.
  10. Revisit GEM sync object infrastructure.. TTM has some framework for this
  11  already.  Possibly this could be refactored out and made more common?
  12  There should be some way to do this with less wheel-reinvention.
  13  . This can be handled by the dma-buf fence/reservation stuff when it
  14    lands
  17. git://
  19Currently tested on
  20. OMAP3530 beagleboard
  21. OMAP4430 pandaboard
  22. OMAP4460 pandaboard
  23. OMAP5432 uEVM