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- What: /sys/bus/pci/drivers/pciback/quirks
- Date: Oct 2011
- KernelVersion: 3.1
- Contact: [email protected]
- 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.
- What: /sys/bus/pci/drivers/pciback/allow_interrupt_control
- Date: Jan 2020
- KernelVersion: 5.6
- Contact: [email protected]
- Description:
- List of devices which can have interrupt control flag (INTx,
- MSI, MSI-X) set by a connected guest. It is meant to be set
- only when the guest is a stubdomain hosting device model (qemu)
- and the actual device is assigned to a HVM. It is not safe
- (similar to permissive attribute) to set for a devices assigned
- to a PV guest. The device is automatically removed from this
- list when the connected pcifront terminates.
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