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Commit 8b63c998 authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk Committed by David Vrabel
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xen-pciback: Document the 'quirks' sysfs file 



Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
parent 2ef76032

Documentation/ABI/testing/sysfs-driver-pciback

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What:           /sys/bus/pci/drivers/pciback/quirks

Date:           Oct 2011

KernelVersion:  3.1

Contact:        xen-devel@lists.xenproject.org

Description:

                If the permissive attribute is set, then writing a string in

                the format of DDDD:BB:DD.F-REG:SIZE:MASK will allow the guest

                to write and read from the PCI device. That is Domain:Bus:

                Device.Function-Register:Size:Mask (Domain is optional).

                For example:

                #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks

                will allow the guest to read and write to the configuration

                register 0x0E.