@@ -2227,6 +2227,20 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
This sorting is done to get a device
order compatible with older (<= 2.4) kernels.
nobfsort Don't sort PCI devices into breadth-first order.
+ pcie_bus_tune_off Disable PCIe MPS (Max Payload Size)
+ tuning and use the BIOS-configured MPS defaults.
+ pcie_bus_safe Set every device's MPS to the largest MPSS
+ (Max Payload Size Support) common to all devices
+ below the root complex.
+ pcie_bus_perf Configure device MPS to the largest
+ allowable MPS based on its parent bus. Also set
+ MRRS (Max Read Request Size) to the largest supported
+ value (no larger than the MPS that the device or bus
+ can support) for best performance.
+ pcie_bus_peer2peer Set every device's MPS to 128B, which
+ every device is guaranteed to support. This
+ configuration allows peer-to-peer DMA between any pair
+ of devices possibly at the cost of reduced performance.
cbiosize=nn[KMG] The fixed amount of bus space which is
reserved for the CardBus bridge's IO window.
The default value is 256 bytes.