sysfs-driver-pciback 1.3 KB

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  1. What: /sys/bus/pci/drivers/pciback/quirks
  2. Date: Oct 2011
  3. KernelVersion: 3.1
  4. Contact: xen-devel@lists.xenproject.org
  5. Description:
  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.
  14. What: /sys/bus/pci/drivers/pciback/allow_interrupt_control
  15. Date: Jan 2020
  16. KernelVersion: 5.6
  17. Contact: xen-devel@lists.xenproject.org
  18. Description:
  19. List of devices which can have interrupt control flag (INTx,
  20. MSI, MSI-X) set by a connected guest. It is meant to be set
  21. only when the guest is a stubdomain hosting device model (qemu)
  22. and the actual device is assigned to a HVM. It is not safe
  23. (similar to permissive attribute) to set for a devices assigned
  24. to a PV guest. The device is automatically removed from this
  25. list when the connected pcifront terminates.