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CONFIG_MIGRATION: Page migration

General informations

The Linux kernel configuration item CONFIG_MIGRATION has multiple definitions:

Page migration found in mm/Kconfig

The configuration item CONFIG_MIGRATION:

Help text

Allows the migration of the physical location of pages of processes while the virtual addresses are not changed. This is useful in two situations. The first is on NUMA systems to put pages nearer to the processors accessing. The second is when allocating huge pages as migration can relocate pages to satisfy a huge page allocation instead of reclaiming.

found in mm/Kconfig

The configuration item CONFIG_MIGRATION:

Help text

Allows the migration of the physical location of pages of processes while the virtual addresses are not changed. This is useful in two situations. The first is on NUMA systems to put pages nearer to the processors accessing. The second is when allocating huge pages as migration can relocate pages to satisfy a huge page allocation instead of reclaiming.

Hardware

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