CONFIG_ARM64_TAGGED_ADDR_ABI: Enable the tagged user addresses syscall ABI

General informations

The Linux kernel configuration item CONFIG_ARM64_TAGGED_ADDR_ABI:

• prompt: Enable the tagged user addresses syscall ABI
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 5.4–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

When this option is enabled, user applications can opt in to a relaxed ABI via prctl() allowing tagged addresses to be passed to system calls as pointer arguments. For details, see Documentation/arch/arm64/tagged-address-abi.rst.

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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