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Merge branch 'pci/virtualization' into next

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* pci/virtualization:
  ixgbe: Use pcie_flr() instead of duplicating it
  IB/hfi1: Use pcie_flr() instead of duplicating it
  PCI: Call pcie_flr() from reset_chelsio_generic_dev()
  PCI: Call pcie_flr() from reset_intel_82599_sfp_virtfn()
  PCI: Export pcie_flr()
  PCI: Add sysfs sriov_drivers_autoprobe to control VF driver binding
  PCI: Avoid FLR for Intel 82579 NICs

Conflicts:
	include/linux/pci.h
This commit is contained in:
Bjorn Helgaas
2017-04-28 10:36:12 -05:00
parent 889e4dd916 63af8f7a82
commit ef1b5dad5a
13 changed files with 134 additions and 86 deletions
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22
Documentation/ABI/testing/sysfs-bus-pci
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@@ -301,3 +301,25 @@ Contact: Emil Velikov <emil.l.velikov@gmail.com>
Description:
This file contains the revision field of the the PCI device.
The value comes from device config space. The file is read only.
What: /sys/bus/pci/devices/.../sriov_drivers_autoprobe
Date: April 2017
Contact: Bodong Wang<bodong@mellanox.com>
Description:
This file is associated with the PF of a device that
supports SR-IOV. It determines whether newly-enabled VFs
are immediately bound to a driver. It initially contains
1, which means the kernel automatically binds VFs to a
compatible driver immediately after they are enabled. If
an application writes 0 to the file before enabling VFs,
the kernel will not bind VFs to a driver.
A typical use case is to write 0 to this file, then enable
VFs, then assign the newly-created VFs to virtual machines.
Note that changing this file does not affect already-
enabled VFs. In this scenario, the user must first disable
the VFs, write 0 to sriov_drivers_autoprobe, then re-enable
the VFs.
This is similar to /sys/bus/pci/drivers_autoprobe, but
affects only the VFs associated with a specific PF.