Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:           /sys/bus/pci/drivers/pciback/quirks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:           Oct 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) KernelVersion:  3.1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Contact:        xen-devel@lists.xenproject.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)                 If the permissive attribute is set, then writing a string in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)                 the format of DDDD:BB:DD.F-REG:SIZE:MASK will allow the guest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)                 to write and read from the PCI device. That is Domain:Bus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)                 Device.Function-Register:Size:Mask (Domain is optional).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)                 For example::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)                   #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)                 will allow the guest to read and write to the configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)                 register 0x0E.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) What:           /sys/bus/pci/drivers/pciback/allow_interrupt_control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) Date:           Jan 2020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) KernelVersion:  5.6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) Contact:        xen-devel@lists.xenproject.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)                 List of devices which can have interrupt control flag (INTx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)                 MSI, MSI-X) set by a connected guest. It is meant to be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)                 only when the guest is a stubdomain hosting device model (qemu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)                 and the actual device is assigned to a HVM. It is not safe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)                 (similar to permissive attribute) to set for a devices assigned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)                 to a PV guest. The device is automatically removed from this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)                 list when the connected pcifront terminates.