CONFIG_KASAN_HW_TAGS: Hardware tag-based mode

General informations

The Linux kernel configuration item CONFIG_KASAN_HW_TAGS:

• prompt: Hardware tag-based mode
• type: bool
• depends on: ( CONFIG_HAVE_ARCH_KASAN_HW_TAGS ) && ( CONFIG_SLUB )
• defined in lib/Kconfig.kasan
• found in Linux kernels: 5.11–5.13, 5.13+HEAD

Help text

Enables hardware tag-based KASAN mode.

This mode requires hardware memory tagging support, and can be used by any architecture that provides it.

Currently this mode is only implemented for arm64 CPUs starting from ARMv8.5 and relies on Memory Tagging Extension and Top Byte Ignore.

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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