CONFIG_IWMMXT: Enable iWMMXt support (DEPRECATED)

General informations

The Linux kernel configuration item CONFIG_IWMMXT has multiple definitions:

Enable iWMMXt support (DEPRECATED) found in arch/arm/Kconfig

The configuration item CONFIG_IWMMXT:

• prompt: Enable iWMMXt support (DEPRECATED)
• type: bool
• depends on: CONFIG_PXA27x || CONFIG_PXA3xx || CONFIG_ARCH_MMP
• defined in arch/arm/Kconfig
• found in Linux kernels: 7.3-rc+HEAD

Help text

Enable support for iWMMXt context switching at run time if running on a CPU that supports it.

Machines that actually support this feature are very rare, and support is deprecated in new gcc-14. While there were a few applications that used this in the past, none are known to still do so.

If you use this, please send a patch to remove the deprecation, otherwise this will be removed in early 2027.

Enable iWMMXt support found in arch/arm/Kconfig

The configuration item CONFIG_IWMMXT:

• prompt: Enable iWMMXt support
• type: bool
• depends on: ( CONFIG_CPU_XSCALE || CONFIG_CPU_XSC3 || CONFIG_CPU_MOHAWK ) && ( CONFIG_PXA27x || CONFIG_PXA3xx || CONFIG_ARCH_MMP )
• defined in arch/arm/Kconfig
• found in Linux kernels: 2.6.20–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.19, 7.0–7.2

Help text

Enable support for iWMMXt context switching at run time if running on a CPU that supports it.

found in arch/arm/mach-pxa/Kconfig

The configuration item CONFIG_IWMMXT:

• prompt:
• type: bool
• depends on: (none)
• defined in arch/arm/mach-pxa/Kconfig
• found in Linux kernels: 2.6.9–2.6.19

Help text

Enable support for iWMMXt

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