diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-09-20 01:23:30 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-22 20:43:37 +0200 |
| commit | afa9fdc2f5f8e4d98f3e77bfa204412cbc181346 (patch) | |
| tree | 8e6c390d8dc18734f6071d2ddd7a2bca01fe9000 /Documentation/x86/x86_64/boot-options.txt | |
| parent | ed6dc4981368aa8ac89b0ea61535cfa2b03533cb (diff) | |
iommu: remove fullflush and nofullflush in IOMMU generic option
This patch against tip/x86/iommu virtually reverts
2842e5bf3115193f05dc9dac20f940e7abf44c1a. But just reverting the
commit breaks AMD IOMMU so this patch also includes some fixes.
The above commit adds new two options to x86 IOMMU generic kernel boot
options, fullflush and nofullflush. But such change that affects all
the IOMMUs needs more discussion (all IOMMU parties need the chance to
discuss it):
http://lkml.org/lkml/2008/9/19/106
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/x86/x86_64/boot-options.txt')
| -rw-r--r-- | Documentation/x86/x86_64/boot-options.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt index c83c8e4bc8e..b0c7b6c4abd 100644 --- a/Documentation/x86/x86_64/boot-options.txt +++ b/Documentation/x86/x86_64/boot-options.txt @@ -233,6 +233,8 @@ 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. |