CONFIG_CPU_HAS_MSA: Support for the MIPS SIMD Architecture

General informations

The Linux kernel configuration item CONFIG_CPU_HAS_MSA has multiple definitions:

Support for the MIPS SIMD Architecture found in arch/mips/Kconfig

The configuration item CONFIG_CPU_HAS_MSA:

• prompt: Support for the MIPS SIMD Architecture
• type: bool
• depends on: ( CONFIG_CPU_SUPPORTS_MSA ) && ( CONFIG_MIPS_FP_SUPPORT ) && ( CONFIG_64BIT || CONFIG_MIPS_O32_FP64_SUPPORT )
• defined in arch/mips/Kconfig
• found in Linux kernels: 3.15–3.16, 4.3–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers and a set of SIMD instructions to operate on them. When this option is enabled the kernel will support allocating & switching MSA vector register contexts. If you know that your kernel will only be running on CPUs which do not support MSA or that your userland will not be making use of it then you may wish to say N here to reduce the size & complexity of your kernel.

If unsure, say Y.

Support for the MIPS SIMD Architecture (EXPERIMENTAL) found in arch/mips/Kconfig

The configuration item CONFIG_CPU_HAS_MSA:

• prompt: Support for the MIPS SIMD Architecture (EXPERIMENTAL)
• type: bool
• depends on: ( CONFIG_CPU_SUPPORTS_MSA ) && ( CONFIG_64BIT || CONFIG_MIPS_O32_FP64_SUPPORT )
• defined in arch/mips/Kconfig
• found in Linux kernels: 3.17–3.19, 4.0–4.2

Help text

MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers and a set of SIMD instructions to operate on them. When this option is enabled the kernel will support allocating & switching MSA vector register contexts. If you know that your kernel will only be running on CPUs which do not support MSA or that your userland will not be making use of it then you may wish to say N here to reduce the size & complexity of your kernel.

If unsure, say Y.

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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