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CONFIG_FLATMEM_MANUAL: Flat Memory

General informations

The Linux kernel configuration item CONFIG_FLATMEM_MANUAL:

• prompt: Flat Memory
• type: bool
• depends on: !( CONFIG_ARCH_DISCONTIGMEM_ENABLE || CONFIG_ARCH_SPARSEMEM_ENABLE ) || CONFIG_ARCH_FLATMEM_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 option allows you to change some of the ways that Linux manages its memory internally. Most users will only have one option here: FLATMEM. This is normal and a correct option.

Some users of more advanced features like NUMA and memory hotplug may have different options here. DISCONTIGMEM is an more mature, better tested system, but is incompatible with memory hotplug and may suffer decreased performance over SPARSEMEM. If unsure between "Sparse Memory" and "Discontiguous Memory", choose "Discontiguous Memory".

If unsure, choose this option (Flat Memory) over any other.

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