PCI: Linux kernel SR-IOV support

Greetings,

Following patches are intended to support SR-IOV capability in the
Linux kernel. With these patches, people can turn a PCI device with
the capability into multiple ones from software perspective, which
will benefit KVM and achieve other purposes such as QoS, security,
and etc.

SR-IOV specification can be found at:
http://www.pcisig.com/members/downloads/specifications/io...
(it requires membership.)

Devices that support SR-IOV are available from following vendors:
http://download.intel.com/design/network/ProdBrf/320025.pdf
http://www.myri.com/vlsi/Lanai_Z8ES_Datasheet.pdf
http://www.neterion.com/products/pdfs/X3100ProductBrief.pdf

Physical Function driver for Intel 82576 NIC (based on drivers/net/igb/)
will come soon.

Major changes from v8 to v9:
  1, put a might_sleep() into SR-IOV API which sleeps (Andi Kleen)
  2, block user config accesses before clearing VF Enable bit (Matthew Wilcox)

Yu Zhao (7):
  PCI: initialize and release SR-IOV capability
  PCI: restore saved SR-IOV state
  PCI: reserve bus range for SR-IOV device
  PCI: add SR-IOV API for Physical Function driver
  PCI: handle SR-IOV Virtual Function Migration
  PCI: document SR-IOV sysfs entries
  PCI: manual for SR-IOV user and driver developer

 Documentation/ABI/testing/sysfs-bus-pci |   27 ++
 Documentation/DocBook/kernel-api.tmpl   |    1 +
 Documentation/PCI/pci-iov-howto.txt     |   99 +++++
 drivers/pci/Kconfig                     |   13 +
 drivers/pci/Makefile                    |    3 +
 drivers/pci/iov.c                       |  707 +++++++++++++++++++++++++++++++
 drivers/pci/pci.c                       |    8 +
 drivers/pci/pci.h                       |   53 +++
 drivers/pci/probe.c                     |    7 +
 include/linux/pci.h                     |   28 ++
 include/linux/pci_regs.h                |   33 ++
 11 files changed, 979 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/PCI/pci-iov-howto.txt
 create mode 100644 drivers/pci/iov.c

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