CONFIG_DIRECT_GBPAGES: Enable 1GB pages for kernel pagetables

General informations

The Linux kernel configuration item CONFIG_DIRECT_GBPAGES has multiple definitions:

Enable 1GB pages for kernel pagetables found in arch/x86/Kconfig

The configuration item CONFIG_DIRECT_GBPAGES:

• prompt: Enable 1GB pages for kernel pagetables
• type: bool
• depends on: ( CONFIG_EXPERT ) && ( CONFIG_X86_64 )
• defined in arch/x86/Kconfig
• found in Linux kernels: 2.6.29–2.6.39, 3.0–3.19, 4.0

Help text

Allow the kernel linear mapping to use 1GB pages on CPUs that support it. This can improve the kernel's performance a tiny bit by reducing TLB pressure. If in doubt, say "Y".

Enable gbpages-mapped kernel pagetables found in arch/x86/Kconfig.debug

The configuration item CONFIG_DIRECT_GBPAGES:

• prompt: Enable gbpages-mapped kernel pagetables
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && CONFIG_EXPERIMENTAL && CONFIG_X86_64
• defined in arch/x86/Kconfig.debug
• found in Linux kernels: 2.6.26–2.6.28

Help text

Enable gigabyte pages support (if the CPU supports it). This can improve the kernel's performance a tiny bit by reducing TLB pressure.

This is experimental code.

If in doubt, say "N".

Hardware

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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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