x86: move GART TLB flushing options to generic code

The GART currently implements the iommu=[no]fullflush command line
parameters which influence its IO/TLB flushing strategy. This patch
makes these parameters generic so that they can be used by the AMD IOMMU
too.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1150444a21ab..40066ceb48fe 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -893,6 +893,10 @@ and is between 256 and 4096 characters. It is defined in the file
                 nomerge
                 forcesac
                 soft
+                fullflush
+                        Flush IO/TLB at every deallocation
+                nofullflush
+                        Flush IO/TLB only when addresses are reused (default)
 
 
         intel_iommu=    [DMAR] Intel IOMMU driver (DMAR) option