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CONFIG_ARM64_PA_BITS_52: 52-bit (ARMv8.2)

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The Linux kernel configuration item CONFIG_ARM64_PA_BITS_52:

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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).



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