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CONFIG_SH_WRITETHROUGH: Use write-through caching

General informations

The Linux kernel configuration item CONFIG_SH_WRITETHROUGH has multiple definitions:

Use write-through caching found in arch/sh/Kconfig

The configuration item CONFIG_SH_WRITETHROUGH:

• prompt: Use write-through caching
• type: bool
• depends on: CONFIG_CPU_SH2
• defined in arch/sh/Kconfig
• found in Linux kernels: 2.6.0–2.6.15

Help text

Selecting this option will configure the caches in write-through mode, as opposed to the default write-back configuration.

Since there's sill some aliasing issues on SH-4, this option will unfortunately still require the majority of flushing functions to be implemented to deal with aliasing.

If unsure, say N.

Use write-through caching found in arch/sh/mm/Kconfig

The configuration item CONFIG_SH_WRITETHROUGH:

• prompt: Use write-through caching
• type: bool
• depends on: (none)
• defined in arch/sh/mm/Kconfig
• found in Linux kernels: 2.6.16–2.6.23

Help text

Selecting this option will configure the caches in write-through mode, as opposed to the default write-back configuration.

Since there's sill some aliasing issues on SH-4, this option will unfortunately still require the majority of flushing functions to be implemented to deal with aliasing.

If unsure, say N.

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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