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CONFIG_X86_RETPOLINE¶

Build with retpolines enabled in x86 assembly code

Type: bool

Help¶

This is recommended on platforms with speculative executions, to protect against branch target injection (AKA Spectre-V2). Full description of how retpolines work can be found here[1].

[1] https://support.google.com/faqs/answer/7625886

Direct dependencies¶

USERSPACE && X86

(Includes any dependencies from if’s and menus.)

Defaults¶

No defaults. Implicitly defaults to n.

Kconfig definition¶

At arch/x86/core/Kconfig:95

Included via Kconfig:10 → Kconfig.zephyr:29 → arch/Kconfig:15 → arch/x86/Kconfig:14

Menu path: (top menu) → X86 Architecture Options

config X86_RETPOLINE
    bool
    prompt "Build with retpolines enabled in x86 assembly code" if USERSPACE && X86
    depends on USERSPACE && X86
    help
      This is recommended on platforms with speculative executions, to
      protect against branch target injection (AKA Spectre-V2).  Full
      description of how retpolines work can be found here[1].

      [1] https://support.google.com/faqs/answer/7625886

(Definitions include propagated dependencies, including from if’s and menus.)