CONFIG_EXPOLINE: Avoid speculative indirect branches in the kernel

General informations

The Linux kernel configuration item CONFIG_EXPOLINE:

• prompt: Avoid speculative indirect branches in the kernel
• type: bool
• depends on: $( CONFIG_cc-option,-mindirect-branch = CONFIG_thunk )
• defined in arch/s390/Kconfig
• found in Linux kernels: 4.16–4.20, 5.0–5.19, 6.0–6.12

Help text

Compile the kernel with the expoline compiler options to guard against kernel-to-user data leaks by avoiding speculative indirect branches. Requires a compiler with -mindirect-branch=thunk support for full protection. The kernel may run slower.

If unsure, say N.

Hardware

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Sources

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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