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x86/swiotlb: fix param usage in boot-options.rst

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Fix the usage of swiotlb param in kernel doc.

Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Dongli Zhang 2022-06-11 01:25:13 -07:00 committed by Christoph Hellwig
parent 466298c656
commit 04c14e8e38
1 changed files with 5 additions and 3 deletions
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8
Documentation/x86/x86_64/boot-options.rst
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@ -287,11 +287,13 @@ iommu options only relevant to the AMD GART hardware IOMMU:
iommu options only relevant to the software bounce buffering (SWIOTLB) IOMMU iommu options only relevant to the software bounce buffering (SWIOTLB) IOMMU
implementation: implementation:
swiotlb=<pages>[,force] swiotlb=<slots>[,force,noforce]
<pages> <slots>
Prereserve that many 128K pages for the software IO bounce buffering. Prereserve that many 2K slots for the software IO bounce buffering.
force force
Force all IO through the software TLB. Force all IO through the software TLB.
noforce
Do not initialize the software TLB.
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