PCI/x86: document pci=earlydump argument

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

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 54f21a5c262b..c7c441e7930e 100644
--- 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