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authorBjorn Helgaas <bhelgaas@google.com>2017-04-28 18:36:12 +0300
committerBjorn Helgaas <bhelgaas@google.com>2017-04-28 18:36:12 +0300
commitef1b5dad5a386885998d11eb45ca7fd183079965 (patch)
treef065b28a01dbe57ef28ace9b88dfbf9c2fe49b09 /Documentation/PCI
parent889e4dd916a1f4dc7f9e6220fed26d811e39ca71 (diff)
parent63af8f7a8293b94787763c933abfd21ba852807f (diff)
downloadlinux-ef1b5dad5a386885998d11eb45ca7fd183079965.tar.xz
Merge branch 'pci/virtualization' into next
* 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
Diffstat (limited to 'Documentation/PCI')
-rw-r--r--Documentation/PCI/pci-iov-howto.txt12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/PCI/pci-iov-howto.txt b/Documentation/PCI/pci-iov-howto.txt
index 2d91ae251982..d2a84151e99c 100644
--- a/Documentation/PCI/pci-iov-howto.txt
+++ b/Documentation/PCI/pci-iov-howto.txt
@@ -68,6 +68,18 @@ To disable SR-IOV capability:
echo 0 > \
/sys/bus/pci/devices/<DOMAIN:BUS:DEVICE.FUNCTION>/sriov_numvfs
+To enable auto probing VFs by a compatible driver on the host, run
+command below before enabling SR-IOV capabilities. This is the
+default behavior.
+ echo 1 > \
+ /sys/bus/pci/devices/<DOMAIN:BUS:DEVICE.FUNCTION>/sriov_drivers_autoprobe
+
+To disable auto probing VFs by a compatible driver on the host, run
+command below before enabling SR-IOV capabilities. Updating this
+entry will not affect VFs which are already probed.
+ echo 0 > \
+ /sys/bus/pci/devices/<DOMAIN:BUS:DEVICE.FUNCTION>/sriov_drivers_autoprobe
+
3.2 Usage example
Following piece of code illustrates the usage of the SR-IOV API.