CONFIG_ARCH_RANDOM: s390 architectural random number generation API

General informations

The Linux kernel configuration item CONFIG_ARCH_RANDOM has multiple definitions:

s390 architectural random number generation API found in arch/s390/Kconfig

The configuration item CONFIG_ARCH_RANDOM:

• prompt: s390 architectural random number generation API
• type: bool
• depends on: (none)
• defined in arch/s390/Kconfig
• found in Linux kernels: 4.12–4.20, 5.0–5.19, 5.19+HEAD

Help text

Enable the s390 architectural random number generation API to provide random data for all consumers within the Linux kernel.

When enabled the arch_random_* functions declared in linux/random.h are implemented. The implementation is based on the s390 CPACF instruction subfunction TRNG which provides a real true random number generator.

If unsure, say Y.

Enable support for random number generation found in arch/arm64/Kconfig

The configuration item CONFIG_ARCH_RANDOM:

• prompt: Enable support for random number generation
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 5.6–5.19, 5.19+HEAD

Help text

Random number generation (part of the ARMv8.5 Extensions) provides a high bandwidth, cryptographically secure hardware random number generator.

x86 architectural random number generator found in arch/x86/Kconfig

The configuration item CONFIG_ARCH_RANDOM:

• prompt: x86 architectural random number generator
• type: bool
• depends on: CONFIG_EXPERT
• defined in arch/x86/Kconfig
• found in Linux kernels: 3.2–3.19, 4.0–4.20, 5.0–5.19, 5.19+HEAD

Help text

Enable the x86 architectural RDRAND instruction (Intel Bull Mountain technology) to generate random numbers. If supported, this is a high bandwidth, cryptographically secure hardware random number generator.

found in arch/powerpc/Kconfig

The configuration item CONFIG_ARCH_RANDOM:

• prompt:
• type: bool
• depends on: (none)
• defined in arch/powerpc/Kconfig
• found in Linux kernels: 3.13–3.19, 4.0–4.20, 5.0–5.19, 5.19+HEAD

Help text

(none)

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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