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

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>
This commit is contained in:
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
implementation:
swiotlb=<pages>[,force]
<pages>
Prereserve that many 128K pages for the software IO bounce buffering.
swiotlb=<slots>[,force,noforce]
<slots>
Prereserve that many 2K slots for the software IO bounce buffering.
force
Force all IO through the software TLB.
noforce
Do not initialize the software TLB.
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