[nik_0_0]

It looks like the Intel out-of-tree driver is carrying around some legacy HAVE_PAGE_COUNT_BULK_UPDATE option that is making their porting efforts difficult.

This commit in upstream ends up getting split in half:

https://github.com/torvalds/linux/commit/8ce29c679a6ecefb88d...

With only 3 lines of it getting pulled into i40e-2.13.10:

https://github.com/dmarion/i40e/blob/master/src/i40e_txrx.c#...

https://github.com/dmarion/i40e/blob/master/src/i40e_txrx.c#...

(Can't link git diff line for 2.13.10->2.14.13 because diff is too big, annoying!)

And the final line getting pulled into i40e-2.14.13:

https://github.com/dmarion/i40e/commit/135d6d885aa4704180e10...

  --- if (unlikely(!pagecnt_bias)) {
  +++ if (unlikely(pagecnt_bias == 1)) {

Best thing I can find in i40e_txrx.c where a single patch in Linux upstream got split across 2.13.10 and 2.14.13. Not a smoking gun exactly, still some exercise left for the reader.