Building a kernel with memory hotplug support
Control the build options for the memory hotplug support through the kernel configuration menu.
Kernel builders: This information is intended for those who want to
build their own kernel. Be aware that both compiling your own kernel or recompiling an existing
distribution usually means that you have to maintain your kernel yourself.
Figure 1 summarizes the common source options that you must select in the Linux® configuration menu to include the memory hotplug functions.
Memory setup -->
...
Allow for memory hot-add (CONFIG_MEMORY_HOTPLUG)
└─ Allow for memory hot remove (CONFIG_MEMORY_HOTREMOVE)
Page migration (CONFIG_MIGRATION)
- CONFIG_MEMORY_HOTPLUG
- is required for dynamically attaching memory to the Linux instance.
- CONFIG_MEMORY_HOTREMOVE and CONFIG_MIGRATION
- are required for dynamically detaching memory from the Linux instance.