CONFIG_MIPS_VA_BITS_48: 48 bits virtual memory

General informations

The Linux kernel configuration item CONFIG_MIPS_VA_BITS_48:

• prompt: 48 bits virtual memory
• type: bool
• depends on: CONFIG_64BIT
• defined in arch/mips/Kconfig
• found in Linux kernels: 4.7–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Support a maximum at least 48 bits of application virtual memory. Default is 40 bits or less, depending on the CPU. For page sizes 16k and above, this option results in a small memory overhead for page tables. For 4k page size, a fourth level of page tables is added which imposes both a memory overhead as well as slower TLB fault handling.

If unsure, say N.

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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