x86: clean up amd_iommu documentation

amd_iommu=off was replaced with a common parameter, iommu=off.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: joerg.roedel@amd.com
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Cc: rjw@sisk.pl
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index fc8f936..6b757b4 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -274,7 +274,6 @@ and is between 256 and 4096 characters. It is defined in the file
        amd_iommu=      [HW,X86-84]
                        Pass parameters to the AMD IOMMU driver in the system.
                        Possible values are:
-                       off     - disable the driver for AMD IOMMU
                        isolate - enable device isolation (each device, as far
                                  as possible, will get its own protection
                                  domain)