CONFIG_IOMMU_DEFAULT_DMA_STRICT: Translated - Strict

General informations

The Linux kernel configuration item CONFIG_IOMMU_DEFAULT_DMA_STRICT:

• prompt: Translated - Strict
• type: bool
• depends on: (none)
• defined in drivers/iommu/Kconfig
• found in Linux kernels: 5.15–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

Trusted devices use translation to restrict their access to only DMA-mapped pages, with strict TLB invalidation on unmap. Equivalent to passing "iommu.passthrough=0 iommu.strict=1" on the command line.

Untrusted devices always use this mode, with an additional layer of bounce-buffering such that they cannot gain access to any unrelated data within a mapped page.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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