Component Type: kbuild config
Description: Device memory (pmem, HMM, etc...) hotplug support
More info: Device memory hotplug support allows for establishing pmem, or other device driver discovered memory regions, in the memmap. This allows pfn_to_page() lookups of otherwise "device-physical" addresses which is needed for using a DAX mapping in an O_DIRECT operation, among other things. If FS_DAX is enabled, then say Y.
Build project: Kconfig (Linux kconfig) (Path: mm\Kconfig )
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