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authorJoerg Roedel <joerg.roedel@amd.com>2008-09-18 15:23:43 +0200
committerIngo Molnar <mingo@elte.hu>2008-09-19 12:59:06 +0200
commit2842e5bf3115193f05dc9dac20f940e7abf44c1a (patch)
tree31461a4fb45db1868f4bfb9f99251db7a5ce6d33 /Documentation
parent270cab2426cdc6307725e4f1f46ecf8ab8e69193 (diff)
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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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt4
-rw-r--r--Documentation/x86/x86_64/boot-options.txt2
2 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1150444..40066ce 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
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index b0c7b6c..c83c8e4 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -233,8 +233,6 @@ IOMMU (input/output memory management unit)
iommu options only relevant to the AMD GART hardware IOMMU:
<size> Set the size of the remapping area in bytes.
allowed Overwrite iommu off workarounds for specific chipsets.
- fullflush Flush IOMMU on each allocation (default).
- nofullflush Don't use IOMMU fullflush.
leak Turn on simple iommu leak tracing (only when
CONFIG_IOMMU_LEAK is on). Default number of leak pages
is 20.