diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-09-18 15:23:43 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-19 12:59:06 +0200 |
| commit | 2842e5bf3115193f05dc9dac20f940e7abf44c1a (patch) | |
| tree | 31461a4fb45db1868f4bfb9f99251db7a5ce6d33 /Documentation | |
| parent | AMD IOMMU: move TLB flushing to the map/unmap helper functions (diff) | |
| download | linux-2842e5bf3115193f05dc9dac20f940e7abf44c1a.tar.xz linux-2842e5bf3115193f05dc9dac20f940e7abf44c1a.zip | |
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.txt | 4 | ||||
| -rw-r--r-- | Documentation/x86/x86_64/boot-options.txt | 2 |
2 files changed, 4 insertions, 2 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 diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt index b0c7b6c4abda..c83c8e4bc8e5 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. |