[PATCH v2 0/2] pci: ACS check fixes

[Alex Williamson <alex.williamson@redhat.com>]

After some further discussion, Don has come around to agreeing that
we cannot assume anything about devices which do not include an ACS
capability.  Patch 1 of this series is therefore the same as sent
before.  We have figured out though that some vendors are indicating
that they don't support peer-to-peer by providing an ACS capability
that is zero'd (ie. no capabilities).  This makes sense as ACS is
largely for allowing control of peer-to-peer features and almost all
of the individual capabilities are optional for multifunction
devices that do not support peer-to-peer.  This also simplifies our
flags filtering.  I'm hoping we'll soon have some quirks for devices
that do not support peer-to-peer, but also do not provide an ACS
capability.  Thanks,

Alex

---

Alex Williamson (2):
      pci: Fix flaw in pci_acs_enabled()
      pci: Differentiate ACS controllable from enabled


 drivers/pci/pci.c |   68 +++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 52 insertions(+), 16 deletions(-)