PCI: PCIe: Ask BIOS for control of all native services at once

[mirror_ubuntu-artful-kernel.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b9008fc3a53d977f33556843c4f2efe6487f88ff..8f126e878dbed651abe8b27a6661901b8dcf00ba 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2043,18 +2043,17 @@ and is between 256 and 4096 characters. It is defined in the file
                        WARNING: Forcing ASPM on may cause system lockups.
 
        pcie_ports=     [PCIE] PCIe ports handling:
+               auto    Ask the BIOS whether or not to use native PCIe services
+                       associated with PCIe ports (PME, hot-plug, AER).  Use
+                       them only if that is allowed by the BIOS.
+               native  Use native PCIe services associated with PCIe ports
+                       unconditionally.
                compat  Treat PCIe ports as PCI-to-PCI bridges, disable the PCIe
                        ports driver.
 
        pcie_pme=       [PCIE,PM] Native PCIe PME signaling options:
-                       Format: {auto|force}[,nomsi]
-               auto    Use native PCIe PME signaling if the BIOS allows the
-                       kernel to control PCIe config registers of root ports.
-               force   Use native PCIe PME signaling even if the BIOS refuses
-                       to allow the kernel to control the relevant PCIe config
-                       registers.
                nomsi   Do not use MSI for native PCIe PME signaling (this makes
-                       all PCIe root ports use INTx for everything).
+                       all PCIe root ports use INTx for all services).
 
        pcmv=           [HW,PCMCIA] BadgePAD 4