Support for write combining.

---
v2:
 * Rebased on top of master.
 * Fix typos.
 * Make commit messages more verbose.
 * Add comments.
 * Initialize fd.

---
v3:
 * Log if BAR was mapped with or without support for WC.

---
v4:
 * Log only if WC mapping failed.
 * Log if wc_activate is set in igb_uio driver.

---
v5:
 * Log message in igb_uio will be printed only once.

Kozik (4):
  igb_uio: add wc option
  bus/pci: reference driver structure
  eal: enable WC during resources mapping
  net/ena: enable WC

 drivers/bus/pci/linux/pci_uio.c | 47 ++++++++++++++++++++++++++++++-----------
 drivers/bus/pci/pci_common.c    | 17 ++++++++++-----
 drivers/bus/pci/rte_bus_pci.h   |  2 ++
 drivers/net/ena/ena_ethdev.c    |  3 ++-
 kernel/linux/igb_uio/igb_uio.c  | 20 +++++++++++++++---
 5 files changed, 68 insertions(+), 21 deletions(-)

-- 
2.7.4