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CONFIG_X86_5LEVEL: Enable 5-level page tables support

General informations

The Linux kernel configuration item CONFIG_X86_5LEVEL:

Help text

5-level paging enables access to larger address space: upto 128 PiB of virtual address space and 4 PiB of physical address space.

It will be supported by future Intel CPUs.

A kernel with the option enabled can be booted on machines that support 4- or 5-level paging.

See Documentation/x86/x86_64/5level-paging.txt for more information.

Say N if unsure.

Hardware

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