CONFIG_ARM64_PA_BITS_52: 52-bit

General informations

The Linux kernel configuration item CONFIG_ARM64_PA_BITS_52 has multiple definitions:

52-bit found in arch/arm64/Kconfig

The configuration item CONFIG_ARM64_PA_BITS_52:

• prompt: 52-bit
• type: bool
• depends on: ( CONFIG_ARM64_64K_PAGES || CONFIG_ARM64_VA_BITS_52 ) && ( CONFIG_ARM64_PAN || ! CONFIG_ARM64_SW_TTBR0_PAN )
• defined in arch/arm64/Kconfig
• found in Linux kernels: 6.9-rc+HEAD

Help text

Enable support for a 52-bit physical address space, introduced as part of the ARMv8.2-LPA extension.

With this enabled, the kernel will also continue to work on CPUs that do not support ARMv8.2-LPA, but with some added memory overhead (and minor performance overhead).

52-bit (ARMv8.2) found in arch/arm64/Kconfig

The configuration item CONFIG_ARM64_PA_BITS_52:

• prompt: 52-bit (ARMv8.2)
• type: bool
• depends on: ( CONFIG_ARM64_64K_PAGES ) && ( CONFIG_ARM64_PAN || ! CONFIG_ARM64_SW_TTBR0_PAN )
• defined in arch/arm64/Kconfig
• found in Linux kernels: 4.16–4.20, 5.0–5.19, 6.0–6.8

Help text

Enable support for a 52-bit physical address space, introduced as part of the ARMv8.2-LPA extension.

With this enabled, the kernel will also continue to work on CPUs that do not support ARMv8.2-LPA, but with some added memory overhead (and minor performance overhead).

Hardware

LKDDb

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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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