:orphan:

.. title:: X86_KERNEL_OFFSET

.. option:: CONFIG_X86_KERNEL_OFFSET

*Kernel offset from beginning of RAM*

Type: ``int``

Help
====

A lot of x86 that resemble PCs have many reserved physical memory
regions within the first megabyte. Specify an offset from the
beginning of RAM to load the kernel in physical memory, avoiding these
regions.

Note that this does not include the "locore" which contains real mode
bootstrap code within the first 64K of physical memory.

This value normally need to be page-aligned.

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

\ :option:`X86 <CONFIG_X86>`

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

Default
=======

- 1048576

Kconfig definition
==================

.. highlight:: kconfig

At ``arch/x86/Kconfig:51``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12``

Menu path: (Top) → X86 Architecture Options

.. parsed-literal::

    config X86_KERNEL_OFFSET
    	int "Kernel offset from beginning of RAM"
    	default 1048576
    	depends on \ :option:`X86 <CONFIG_X86>`
    	help
    	  A lot of x86 that resemble PCs have many reserved physical memory
    	  regions within the first megabyte. Specify an offset from the
    	  beginning of RAM to load the kernel in physical memory, avoiding these
    	  regions.
	  
    	  Note that this does not include the "locore" which contains real mode
    	  bootstrap code within the first 64K of physical memory.
	  
    	  This value normally need to be page-aligned.

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