:orphan:

.. title:: CONFIG_ISR_STACK_SIZE

.. kconfig:: CONFIG_ISR_STACK_SIZE

CONFIG_ISR_STACK_SIZE
#####################

*ISR and initialization stack size (in bytes)*

Type: ``int``

Help
====

.. code-block:: none

    This option specifies the size of the stack used by interrupt
    service routines (ISRs), and during kernel initialization.

Defaults
========

- 4096
- 2048
- 2048
- 2048
- 2048
- 4096 if \ :kconfig:`64BIT <CONFIG_64BIT>`
- 4096
- 4096
- 16384
- 2048

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



At ``<Zephyr Boards>/arm/mps2_an385/Kconfig.defconfig:58``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:22``

Menu path: (Top)

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 4096
    	depends on COVERAGE && BOARD_MPS2_AN385

----

At ``<Zephyr SoC>/riscv/esp32c3/Kconfig.defconfig:29``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1``

Menu path: (Top)

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_ESP32C3

----

At ``<Zephyr SoC>/xtensa/esp32s2/Kconfig.defconfig:20``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1``

Menu path: (Top)

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_ESP32S2

----

At ``<Zephyr SoC>/riscv/esp32c3/Kconfig.defconfig:29``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27``

Menu path: (Top)

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_ESP32C3

----

At ``<Zephyr SoC>/xtensa/esp32s2/Kconfig.defconfig:20``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27``

Menu path: (Top)

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_ESP32S2

----

At ``<Zephyr Architecture>/arc/Kconfig:367``

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

Menu path: (Top)

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 4096 if 64BIT

----

At ``<Zephyr Architecture>/arm64/core/Kconfig:60``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/arm64/Kconfig:32``

Menu path: (Top) → ARM64 Options

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 4096
    	depends on ARM64

----

At ``<Zephyr Architecture>/sparc/Kconfig:44``

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

Menu path: (Top) → SPARC Options

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int
    	default 4096
    	depends on SPARC

----

At ``<Zephyr Architecture>/x86/core/Kconfig.intel64:14``

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 ISR_STACK_SIZE
    	int
    	default 16384
    	depends on X86_64 && X86

----

At ``<Zephyr Kernel>/Kconfig:166``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:40``

Menu path: (Top) → General Kernel Options

.. code-block:: kconfig

    config ISR_STACK_SIZE
    	int "ISR and initialization stack size (in bytes)"
    	default 2048
    	help
    	  This option specifies the size of the stack used by interrupt
    	  service routines (ISRs), and during kernel initialization.

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