:orphan:

.. title:: CONFIG_X86_USERSPACE

.. kconfig:: CONFIG_X86_USERSPACE

CONFIG_X86_USERSPACE
####################

*(No prompt -- not directly user assignable.)*

Type: ``bool``

Help
====

.. code-block:: none

    This option enables APIs to drop a thread's privileges down to ring 3,
    supporting user-level threads that are protected from each other and
    from crashing the kernel.

Help
====

.. code-block:: none

    This option enables APIs to drop a thread's privileges down to ring 3,
    supporting user-level threads that are protected from each other and
    from crashing the kernel.

Direct dependencies
===================

(!\ :kconfig:`X86_64 <CONFIG_X86_64>` && \ :kconfig:`X86 <CONFIG_X86>`) || (\ :kconfig:`X86_64 <CONFIG_X86_64>` && \ :kconfig:`X86 <CONFIG_X86>`)

*(Includes any dependencies from ifs and menus.)*

Defaults
========

- y if \ :kconfig:`USERSPACE <CONFIG_USERSPACE>`
- y if \ :kconfig:`USERSPACE <CONFIG_USERSPACE>`

Symbols selected by this symbol
===============================

- \ :kconfig:`THREAD_STACK_INFO <CONFIG_THREAD_STACK_INFO>`
- \ :kconfig:`SET_GDT <CONFIG_SET_GDT>`
- \ :kconfig:`GDT_DYNAMIC <CONFIG_GDT_DYNAMIC>`
- \ :kconfig:`X86_ENABLE_TSS <CONFIG_X86_ENABLE_TSS>`
- \ :kconfig:`THREAD_STACK_INFO <CONFIG_THREAD_STACK_INFO>`

Kconfig definitions
===================



At ``<Zephyr Architecture>/x86/core/Kconfig.ia32:67``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/x86/Kconfig:482``

Menu path: (Top) → X86 Architecture Options → Processor Capabilities

.. code-block:: kconfig

    config X86_USERSPACE
    	bool
    	default y if USERSPACE
    	select THREAD_STACK_INFO
    	select SET_GDT
    	select GDT_DYNAMIC
    	select X86_ENABLE_TSS
    	depends on !X86_64 && X86
    	help
    	  This option enables APIs to drop a thread's privileges down to ring 3,
    	  supporting user-level threads that are protected from each other and
    	  from crashing the kernel.

----

At ``<Zephyr Architecture>/x86/core/Kconfig.intel64:81``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/x86/Kconfig:483``

Menu path: (Top) → X86 Architecture Options

.. code-block:: kconfig

    config X86_USERSPACE
    	bool
    	default y if USERSPACE
    	select THREAD_STACK_INFO
    	depends on X86_64 && X86
    	help
    	  This option enables APIs to drop a thread's privileges down to ring 3,
    	  supporting user-level threads that are protected from each other and
    	  from crashing the kernel.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*