PCI/x86: document pci=earlydump argument

Document the "pci=earlydump" argument.  This currently only works on x86.

Signed-off-by: Bjorn Helgaas <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 54f21a5c262b02ef6cb4718f72b8357693197cf3..c7c441e7930e9e5c320268b291f344e51291d33c 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1659,6 +1659,8 @@ and is between 256 and 4096 characters. It is defined in the file
                        See also Documentation/blockdev/paride.txt.
 
        pci=option[,option...]  [PCI] various PCI subsystem options:
+               earlydump       [X86] dump PCI config space before the kernel
+                               changes anything
                off             [X86] don't probe for the PCI bus
                bios            [X86-32] force use of PCI BIOS, don't access
                                the hardware directly. Use this if your machine