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    SubjectRe: [PATCH v10 6/7] PCI: document SR-IOV sysfs entries
    Matthew Wilcox wrote:
    > Randy, can you wordsmith this one?

    I'll try.

    > I think I'm starting to understand the difference between physfn and
    > dep_link, but an example would definitely help. It may or may not be
    > appropriate to put it in.
    >
    > On Fri, Feb 20, 2009 at 02:54:47PM +0800, Yu Zhao wrote:
    >> Signed-off-by: Yu Zhao <yu.zhao@intel.com>
    >> ---
    >> Documentation/ABI/testing/sysfs-bus-pci | 27 +++++++++++++++++++++++++++
    >> 1 files changed, 27 insertions(+), 0 deletions(-)
    >>
    >> diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
    >> index ceddcff..84dc100 100644
    >> --- a/Documentation/ABI/testing/sysfs-bus-pci
    >> +++ b/Documentation/ABI/testing/sysfs-bus-pci
    >> @@ -9,3 +9,30 @@ Description:
    >> that some devices may have malformatted data. If the
    >> underlying VPD has a writable section then the
    >> corresponding section of this file will be writable.
    >> +
    >> +What: /sys/bus/pci/devices/.../virtfn/N
    >> +Date: February 2009
    >> +Contact: Yu Zhao <yu.zhao@intel.com>
    >> +Description:
    >> + This symbol link appears when hardware supports SR-IOV

    symbolic supports the SR-IOV

    >> + capability and Physical Function driver has enabled it.

    ^the | its | a

    >> + The symbol link points to the PCI device sysfs entry of

    symbolic

    >> + Virtual Function whose index is N (0...MaxVFs-1).

    the Virtual Function

    >> +
    >> +What: /sys/bus/pci/devices/.../virtfn/dep_link
    >> +Date: February 2009
    >> +Contact: Yu Zhao <yu.zhao@intel.com>
    >> +Description:
    >> + This symbol link appears when hardware supports SR-IOV

    symbolic supports the SR-IOV

    >> + capability and Physical Function driver has enabled it,

    ^its | the | a

    >> + and this device has vendor specific dependencies with
    >> + others. The symbol link points to the PCI device sysfs

    symbolic

    >> + entry of Physical Function this device depends on.
    >> +
    >> +What: /sys/bus/pci/devices/.../physfn
    >> +Date: February 2009
    >> +Contact: Yu Zhao <yu.zhao@intel.com>
    >> +Description:
    >> + This symbol link appears when a device is Virtual Function.

    symbolic is a Virtual Function.

    >> + The symbol link points to the PCI device sysfs entry of

    symbolic entry of the

    >> + Physical Function this device associates with.



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