:orphan:

.. title:: CONFIG_QEMU_ICOUNT

.. kconfig:: CONFIG_QEMU_ICOUNT

CONFIG_QEMU_ICOUNT
##################

*QEMU icount mode*

Type: ``bool``

Help
====

.. code-block:: none

    Enable QEMU virtual instruction counter. The virtual cpu will
    execute one instruction every 2^N ns of virtual time. This will
    give deterministic execution times from the guest point of view.

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

\ :kconfig:`BOARD_QEMU_X86 <CONFIG_BOARD_QEMU_X86>` || \ :kconfig:`BOARD_QEMU_X86_LAKEMONT <CONFIG_BOARD_QEMU_X86_LAKEMONT>` || \ :kconfig:`BOARD_QEMU_X86_TINY <CONFIG_BOARD_QEMU_X86_TINY>` || \ :kconfig:`QEMU_TARGET <CONFIG_QEMU_TARGET>`

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

Defaults
========

- n if \ :kconfig:`HPET_TIMER <CONFIG_HPET_TIMER>` && \ :kconfig:`SHELL <CONFIG_SHELL>`
- n if \ :kconfig:`HPET_TIMER <CONFIG_HPET_TIMER>` && \ :kconfig:`SHELL <CONFIG_SHELL>`
- n if \ :kconfig:`HPET_TIMER <CONFIG_HPET_TIMER>` && \ :kconfig:`SHELL <CONFIG_SHELL>`
- y if !\ :kconfig:`NETWORKING <CONFIG_NETWORKING>` && !\ :kconfig:`BT <CONFIG_BT>`

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



At ``<Zephyr Boards>/x86/qemu_x86/Kconfig.defconfig:27``

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

Menu path: (Top)

.. code-block:: kconfig

    config QEMU_ICOUNT
    	bool
    	default n if HPET_TIMER && SHELL
    	depends on BOARD_QEMU_X86

----

At ``<Zephyr Boards>/x86/qemu_x86/Kconfig.defconfig:64``

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

Menu path: (Top)

.. code-block:: kconfig

    config QEMU_ICOUNT
    	bool
    	default n if HPET_TIMER && SHELL
    	depends on BOARD_QEMU_X86_LAKEMONT

----

At ``<Zephyr Boards>/x86/qemu_x86/Kconfig.defconfig:91``

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

Menu path: (Top)

.. code-block:: kconfig

    config QEMU_ICOUNT
    	bool
    	default n if HPET_TIMER && SHELL
    	depends on BOARD_QEMU_X86_TINY

----

At ``<Zephyr Boards>/Kconfig:41``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:37``

Menu path: (Top) → Board Options

.. code-block:: kconfig

    config QEMU_ICOUNT
    	bool "QEMU icount mode"
    	default y if !NETWORKING && !BT
    	depends on QEMU_TARGET
    	help
    	  Enable QEMU virtual instruction counter. The virtual cpu will
    	  execute one instruction every 2^N ns of virtual time. This will
    	  give deterministic execution times from the guest point of view.

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