---
layout: default
title: Kernel non-obvious options for custom build
date: 2026-02-08 17:44 +0100
tags: kernel
---
Option names and configuration symbols based on kernel v6.12.


h2. Bluetooth

Sending files over e.g. @blueman@:

* RFCOMM protocol support (@BT_RFCOMM@)

h2. Security hardening

Control flow Enforcement Technology, used when @cet@ USE flag is enabled for
build toolchain:
* Indirect Branch Tracking (@X86_KERNEL_IBT@)
* X86 userspace shadow stack (@X86_USER_SHADOW_STACK@)

h2. Wireguard

* IP: policy routing (@IP_MULTIPLE_TABLES@)