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CONFIG_ACPI_WMI: WMI

General informations

The Linux kernel configuration item CONFIG_ACPI_WMI has multiple definitions:

WMI found in drivers/platform/x86/Kconfig

The configuration item CONFIG_ACPI_WMI:

Help text

This driver adds support for the ACPI-WMI (Windows Management Instrumentation) mapper device (PNP0C14) found on some systems.

ACPI-WMI is a proprietary extension to ACPI to expose parts of the ACPI firmware to userspace - this is done through various vendor defined methods and data blocks in a PNP0C14 device, which are then made available for userspace to call.

The implementation of this in Linux currently only exposes this to other kernel space drivers.

This driver is a required dependency to build the firmware specific drivers needed on many machines, including Acer and HP laptops.

It is safe to enable this driver even if your DSDT doesn't define any ACPI-WMI devices.

WMI (EXPERIMENTAL) found in drivers/acpi/Kconfig

The configuration item CONFIG_ACPI_WMI:

Help text

This driver adds support for the ACPI-WMI (Windows Management Instrumentation) mapper device (PNP0C14) found on some systems.

ACPI-WMI is a proprietary extension to ACPI to expose parts of the ACPI firmware to userspace - this is done through various vendor defined methods and data blocks in a PNP0C14 device, which are then made available for userspace to call.

The implementation of this in Linux currently only exposes this to other kernel space drivers.

This driver is a required dependency to build the firmware specific drivers needed on many machines, including Acer and HP laptops.

It is safe to enable this driver even if your DSDT doesn't define any ACPI-WMI devices.

Hardware

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