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iommu: Fix passthrough option documentation 

Document that the default for "iommu.passthrough" is now configurable.

Fixes: 58d1131777 ("iommu: Add config option to set passthrough as default")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Robin Murphy 2018-09-20 14:14:26 +01:00 committed by Jonathan Corbet
parent 52272c923a
commit 9d723b4ccb
1 changed files with 1 additions and 1 deletions
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2
Documentation/admin-guide/kernel-parameters.txt
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@ -1754,7 +1754,7 @@
Format: { "0" | "1" }
0 - Use IOMMU translation for DMA.
1 - Bypass the IOMMU for DMA.
unset - Use IOMMU translation for DMA.
unset - Use value of CONFIG_IOMMU_DEFAULT_PASSTHROUGH.
io7= [HW] IO7 for Marvel based alpha systems
See comment before marvel_specify_io7 in