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CONFIG_MMAPPER: Example IO memory driver (BROKEN)

General informations

The Linux kernel configuration item CONFIG_MMAPPER has multiple definitions:

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

The configuration item CONFIG_MMAPPER:

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.

Example IO memory driver found in arch/um/Kconfig_block

The configuration item CONFIG_MMAPPER:

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:

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:

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:

Help text

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

Hardware

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