diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 71259e052ce..278e3ab1f16 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -149,7 +149,18 @@ config MOVABLE_NODE depends on NO_BOOTMEM depends on X86_64 depends on NUMA - depends on BROKEN + default n + help + Allow a node to have only movable memory. Pages used by the kernel, + such as direct mapping pages cannot be migrated. So the corresponding + memory device cannot be hotplugged. This option allows users to + online all the memory of a node as movable memory so that the whole + node can be hotplugged. Users who don't use the memory hotplug + feature are fine with this option on since they don't online memory + as movable. + + Say Y here if you want to hotplug a whole node. + Say N here if you want kernel to use memory on all nodes evenly. # eventually, we can have this option just 'select SPARSEMEM' config MEMORY_HOTPLUG |