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1What: /sys/bus/pci/drivers/pciback/quirks
2Date: Oct 2011
3KernelVersion: 3.1
4Contact: xen-devel@lists.xenproject.org
5Description:
6 If the permissive attribute is set, then writing a string in
7 the format of DDDD:BB:DD.F-REG:SIZE:MASK will allow the guest
8 to write and read from the PCI device. That is Domain:Bus:
9 Device.Function-Register:Size:Mask (Domain is optional).
10 For example:
11 #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks
12 will allow the guest to read and write to the configuration
13 register 0x0E.