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CONFIG_SPARSEMEM_MANUAL: Sparse Memory

General informations

The Linux kernel configuration item CONFIG_SPARSEMEM_MANUAL:

• prompt: Sparse Memory
• type: bool
• depends on: CONFIG_ARCH_SPARSEMEM_ENABLE
• defined in mm/Kconfig
• found in Linux kernels: 2.6.13–2.6.39, 3.0–3.9, 3.10-rc+HEAD

Help text

This will be the only option for some systems, including memory hotplug systems. This is normal.

For many other systems, this will be an alternative to "Discontiguous Memory". This option provides some potential performance benefits, along with decreased code complexity, but it is newer, and more experimental.

If unsure, choose "Discontiguous Memory" or "Flat Memory" over this option.

Hardware

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