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CONFIG_ARM64_FORCE_52BIT: Force 52-bit virtual addresses for userspace

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The Linux kernel configuration item CONFIG_ARM64_FORCE_52BIT:

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For systems with 52-bit userspace VAs enabled, the kernel will attempt to maintain compatibility with older software by providing 48-bit VAs unless a hint is supplied to mmap.

This configuration option disables the 48-bit compatibility logic, and forces all userspace addresses to be 52-bit on HW that supports it. One should only enable this configuration option for stress testing userspace memory management code. If unsure say N here.



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