CONFIG_UML_RANDOM: UML Random Number Generator support

General informations

The Linux kernel configuration item CONFIG_UML_RANDOM has multiple definitions:

UML Random Number Generator support found in drivers/char/hw_random/Kconfig

The configuration item CONFIG_UML_RANDOM:

• prompt: UML Random Number Generator support
• type: tristate
• depends on: CONFIG_UML
• defined in drivers/char/hw_random/Kconfig
• found in Linux kernels: 5.11–5.19, 6.0–6.8, 6.9-rc+HEAD
• modules built: random, random, random

Help text

This option enables UML's "hardware" random number generator. It attaches itself to the host's /dev/random, supplying as much entropy as the host has, rather than the small amount the UML gets from its own drivers. It registers itself as a rng-core driver thus providing a device which is usually called /dev/hwrng. This hardware random number generator does feed into the kernel's random number generator entropy pool.

If unsure, say Y.

Hardware random number generator found in drivers/char/hw_random/Kconfig

The configuration item CONFIG_UML_RANDOM:

• prompt: Hardware random number generator
• type: tristate
• depends on: CONFIG_UML
• defined in drivers/char/hw_random/Kconfig
• found in Linux kernels: 3.2–3.19, 4.0–4.20, 5.0–5.10
• modules built: random, random, random

Help text

This option enables UML's "hardware" random number generator. It attaches itself to the host's /dev/random, supplying as much entropy as the host has, rather than the small amount the UML gets from its own drivers. It registers itself as a standard hardware random number generator, major 10, minor 183, and the canonical device name is /dev/hwrng. The way to make use of this is to install the rng-tools package (check your distro, or download from http://sourceforge.net/projects/gkernel/). rngd periodically reads /dev/hwrng and injects the entropy into /dev/random.

Hardware random number generator found in arch/um/Kconfig.char

The configuration item CONFIG_UML_RANDOM:

• prompt: Hardware random number generator
• type: tristate
• depends on: (none)
• defined in arch/um/Kconfig.char
• found in Linux kernels: 2.6.14–2.6.39, 3.0–3.1
• modules built: random, random, random

Help text

This option enables UML's "hardware" random number generator. It attaches itself to the host's /dev/random, supplying as much entropy as the host has, rather than the small amount the UML gets from its own drivers. It registers itself as a standard hardware random number generator, major 10, minor 183, and the canonical device name is /dev/hwrng. The way to make use of this is to install the rng-tools package (check your distro, or download from http://sourceforge.net/projects/gkernel/). rngd periodically reads /dev/hwrng and injects the entropy into /dev/random.

Hardware random number generator found in arch/um/Kconfig_char

The configuration item CONFIG_UML_RANDOM:

• prompt: Hardware random number generator
• type: tristate
• depends on: (none)
• defined in arch/um/Kconfig_char
• found in Linux kernels: 2.6.12–2.6.13
• modules built: random, random, random

Help text

This option enables UML's "hardware" random number generator. It attaches itself to the host's /dev/random, supplying as much entropy as the host has, rather than the small amount the UML gets from its own drivers. It registers itself as a standard hardware random number generator, major 10, minor 183, and the canonical device name is /dev/hwrng. The way to make use of this is to install the rng-tools package (check your distro, or download from http://sourceforge.net/projects/gkernel/). rngd periodically reads /dev/hwrng and injects the entropy into /dev/random.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module random CONFIG_UML_RANDOM : arch/um/Kconfig.char : "Hardware random number generator" # in 2.6.14–2.6.39, 3.0–3.1
• lkddb module random CONFIG_UML_RANDOM : arch/um/Kconfig_char : "Hardware random number generator" # in 2.6.12–2.6.13
• lkddb module random CONFIG_UML_RANDOM : drivers/char/hw_random/Kconfig : "UML Random Number Generator support" # in 3.2–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

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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