CONFIG_MMAPPER: iomem emulation driver

General informations

The Linux kernel configuration item CONFIG_MMAPPER has multiple definitions:

iomem emulation driver found in arch/um/Kconfig

The configuration item CONFIG_MMAPPER:

• prompt: iomem emulation driver
• type: tristate
• depends on: (none)
• defined in arch/um/Kconfig
• found in Linux kernels: 4.19–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD
• modules built: mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern

Help text

This driver allows a host file to be used as emulated IO memory inside UML.

iomem emulation driver found in arch/um/Kconfig.um

The configuration item CONFIG_MMAPPER:

• prompt: iomem emulation driver
• type: tristate
• depends on: (none)
• defined in arch/um/Kconfig.um
• found in Linux kernels: 3.2–3.19, 4.0–4.18
• modules built: mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern

Help text

This driver allows a host file to be used as emulated IO memory inside UML.

iomem emulation driver found in arch/um/Kconfig.char

The configuration item CONFIG_MMAPPER:

• prompt: iomem emulation driver
• 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: mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern

Help text

This driver allows a host file to be used as emulated IO memory inside UML.

Example IO memory driver (BROKEN) found in drivers/block/Kconfig

The configuration item CONFIG_MMAPPER:

• prompt: Example IO memory driver (BROKEN)
• type: tristate
• depends on: CONFIG_UML && CONFIG_BROKEN
• defined in drivers/block/Kconfig
• found in Linux kernels: 2.6.11–2.6.23
• modules built: mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern

Help text

The User-Mode Linux port can provide support for IO Memory emulation with this option. This allows a host file to be specified as an I/O region on the kernel command line. That file will be mapped into UML's kernel address space where a driver can locate it and do whatever it wants with the memory, including providing an interface to it for UML processes to use.

For more information, see http://user-mode-linux.sourceforge.net/iomem.html.

If you'd like to be able to provide a simulated IO port space for User-Mode Linux processes, say Y. If unsure, say N.

iomem emulation driver found in arch/um/Kconfig_char

The configuration item CONFIG_MMAPPER:

• prompt: iomem emulation driver
• type: tristate
• depends on: (none)
• defined in arch/um/Kconfig_char
• found in Linux kernels: 2.6.12–2.6.13
• modules built: mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern

Help text

This driver allows a host file to be used as emulated IO memory inside UML.

Example IO memory driver found in arch/um/Kconfig_block

The configuration item CONFIG_MMAPPER:

• prompt: Example IO memory driver
• type: tristate
• depends on: CONFIG_BROKEN
• defined in arch/um/Kconfig_block
• found in Linux kernels: 2.5.45–2.5.75, 2.6.0–2.6.10
• modules built: mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern, mmapper_kern

Help text

The User-Mode Linux port can provide support for IO Memory emulation with this option. This allows a host file to be specified as an I/O region on the kernel command line. That file will be mapped into UML's kernel address space where a driver can locate it and do whatever it wants with the memory, including providing an interface to it for UML processes to use.

For more information, see http://user-mode-linux.sourceforge.net/iomem.html.

If you'd like to be able to provide a simulated IO port space for User-Mode Linux processes, say Y. If unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module mmapper_kern CONFIG_MMAPPER : arch/um/Kconfig : "iomem emulation driver" # in 4.19–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD
• lkddb module mmapper_kern CONFIG_MMAPPER : arch/um/Kconfig.char : "iomem emulation driver" # in 2.6.14–2.6.39, 3.0–3.1
• lkddb module mmapper_kern CONFIG_MMAPPER : arch/um/Kconfig.um : "iomem emulation driver" # in 3.2–3.19, 4.0–4.18
• lkddb module mmapper_kern CONFIG_MMAPPER : arch/um/Kconfig_block : "Example IO memory driver" # in 2.5.45–2.5.75, 2.6.0–2.6.10
• lkddb module mmapper_kern CONFIG_MMAPPER : arch/um/Kconfig_char : "iomem emulation driver" # in 2.6.12–2.6.13
• lkddb module mmapper_kern CONFIG_MMAPPER : drivers/block/Kconfig : "Example IO memory driver (BROKEN)" # in 2.6.11–2.6.23

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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