The latest development version of this page may be more current than this released 2.1.0 version.

CONFIG_X86_USERSPACE

(No prompt – not directly user assignable.)

Type: bool

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.

Direct dependencies

!X86_64 && X86

(Includes any dependencies from ifs and menus.)

Default

• y if USERSPACE

Symbols selected by this symbol

• THREAD_STACK_INFO

• SET_GDT

• GDT_DYNAMIC

• X86_ENABLE_TSS

Kconfig definition

At arch/x86/core/Kconfig.ia32:115

Included via Kconfig:8 → Kconfig.zephyr:31 → arch/Kconfig:12 → arch/x86/Kconfig:234

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

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.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)