Re: [PATCH v4 5/5] mm: enable CONFIG_MOVABLE_NODE on non-x86 arches
From: Aneesh Kumar K.V
Date: Fri Oct 07 2016 - 02:40:42 EST
Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx> writes:
> To support movable memory nodes (CONFIG_MOVABLE_NODE), at least one of
> the following must be true:
> 1. We're on x86. This arch has the capability to identify movable nodes
> at boot by parsing the ACPI SRAT, if the movable_node option is used.
> 2. Our config supports memory hotplug, which means that a movable node
> can be created by hotplugging all of its memory into ZONE_MOVABLE.
> Fix the Kconfig definition of CONFIG_MOVABLE_NODE, which currently
> recognizes (1), but not (2).
We now enable a lot of new code on different arch, such as the new node list
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
> mm/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/mm/Kconfig b/mm/Kconfig
> index be0ee11..5d0818f 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -153,7 +153,7 @@ config MOVABLE_NODE
> bool "Enable to assign a node which has only movable memory"
> depends on HAVE_MEMBLOCK
> depends on NO_BOOTMEM
> - depends on X86_64
> + depends on X86_64 || MEMORY_HOTPLUG
> depends on NUMA
> default n