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| author | Andi Kleen <ak@suse.de> | 2006-09-30 01:47:55 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-30 01:47:55 +0200 |
| commit | ece668401250c1d0419ed078c1d26ccdd30d3289 (patch) | |
| tree | 6a8fc43edbee644cc6af3cf8252795c858a99b6a /Documentation | |
| parent | b885808e185a4ec2dfe16c84434f79e95f0245b0 (diff) | |
| download | linux-ece668401250c1d0419ed078c1d26ccdd30d3289.tar.gz linux-ece668401250c1d0419ed078c1d26ccdd30d3289.tar.bz2 linux-ece668401250c1d0419ed078c1d26ccdd30d3289.zip | |
[PATCH] Allow disabling DAC using command line options
Might or might not work around some reported bugs on VIA systems.
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/x86_64/boot-options.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt index 4303e0c12476..e97a4c8fe6ea 100644 --- a/Documentation/x86_64/boot-options.txt +++ b/Documentation/x86_64/boot-options.txt @@ -199,6 +199,10 @@ IOMMU allowed overwrite iommu off workarounds for specific chipsets. soft Use software bounce buffering (default for Intel machines) noaperture Don't touch the aperture for AGP. + allowdac Allow DMA >4GB + When off all DMA over >4GB is forced through an IOMMU or bounce + buffering. + nodac Forbid DMA >4GB swiotlb=pages[,force] |