:orphan:

.. title:: CONFIG_MPU_STACK_GUARD

.. kconfig:: CONFIG_MPU_STACK_GUARD

CONFIG_MPU_STACK_GUARD
######################

*Thread Stack Guards*

*Thread Stack Guards*

Type: ``bool``

Help
====

.. code-block:: none

    Enable thread stack guards via MPU. ARC supports built-in stack protection.
    If your core supports that, it is preferred over MPU stack guard.
    For ARC_MPU_VER == 2, it requires 2048 extra bytes and a strong start address
    alignment, this will bring big waste of memory, so no support for it.

Help
====

.. code-block:: none

    Enable Thread Stack Guards via MPU

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

(\ :kconfig:`ARC_CORE_MPU <CONFIG_ARC_CORE_MPU>` && \ :kconfig:`ARC_MPU_VER <CONFIG_ARC_MPU_VER>` != 2 && \ :kconfig:`CPU_HAS_MPU <CONFIG_CPU_HAS_MPU>` && \ :kconfig:`ARC <CONFIG_ARC>`) || (\ :kconfig:`ARM_MPU <CONFIG_ARM_MPU>` && \ :kconfig:`CPU_HAS_MPU <CONFIG_CPU_HAS_MPU>` && \ :kconfig:`ARM <CONFIG_ARM>`)

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

Defaults
========

No defaults. Implicitly defaults to ``n``.

Symbols that select this symbol
===============================

- \ :kconfig:`ARC_STACK_PROTECTION <CONFIG_ARC_STACK_PROTECTION>`
- \ :kconfig:`ARM_STACK_PROTECTION <CONFIG_ARM_STACK_PROTECTION>`

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



At ``<Zephyr Architecture>/arc/core/mpu/Kconfig:20``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/arc/Kconfig:334``

Menu path: (Top) → ARC Options → ARC CPU Options → ARC MPU Options → ARC Core MPU functionalities

.. code-block:: kconfig

    config MPU_STACK_GUARD
    	bool "Thread Stack Guards"
    	depends on ARC_CORE_MPU && ARC_MPU_VER != 2 && CPU_HAS_MPU && ARC
    	help
    	  Enable thread stack guards via MPU. ARC supports built-in stack protection.
    	  If your core supports that, it is preferred over MPU stack guard.
    	  For ARC_MPU_VER == 2, it requires 2048 extra bytes and a strong start address
    	  alignment, this will bring big waste of memory, so no support for it.

----

At ``<Zephyr Architecture>/arm/core/aarch32/mpu/Kconfig:59``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/arm/Kconfig:57`` → ``<Zephyr Architecture>/arm/core/aarch32/Kconfig:297``

Menu path: (Top) → ARM Options

.. code-block:: kconfig

    config MPU_STACK_GUARD
    	bool "Thread Stack Guards"
    	depends on ARM_MPU && CPU_HAS_MPU && ARM
    	help
    	  Enable Thread Stack Guards via MPU

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