CONFIG_X86_X32: x32 ABI for 64-bit mode

General informations

The Linux kernel configuration item CONFIG_X86_X32 has multiple definitions:

x32 ABI for 64-bit mode found in arch/x86/Kconfig

The configuration item CONFIG_X86_X32:

• prompt: x32 ABI for 64-bit mode
• type: bool
• depends on: CONFIG_X86_64
• defined in arch/x86/Kconfig
• found in Linux kernels: 3.9–3.19, 4.0–4.20, 5.0–5.17, 5.17+HEAD

Help text

Include code to run binaries for the x32 native 32-bit ABI for 64-bit processors. An x32 process gets access to the full 64-bit register file and wide data path while leaving pointers at 32 bits for smaller memory footprint.

You will need a recent binutils (2.22 or later) with elf32_x86_64 support enabled to compile a kernel with this option set.

x32 ABI for 64-bit mode (EXPERIMENTAL) found in arch/x86/Kconfig

The configuration item CONFIG_X86_X32:

• prompt: x32 ABI for 64-bit mode (EXPERIMENTAL)
• type: bool
• depends on: CONFIG_X86_64 && CONFIG_IA32_EMULATION && CONFIG_EXPERIMENTAL
• defined in arch/x86/Kconfig
• found in Linux kernels: 3.4–3.8

Help text

Include code to run binaries for the x32 native 32-bit ABI for 64-bit processors. An x32 process gets access to the full 64-bit register file and wide data path while leaving pointers at 32 bits for smaller memory footprint.

You will need a recent binutils (2.22 or later) with elf32_x86_64 support enabled to compile a kernel with this option set.

Hardware

LKDDb

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This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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