Re: [PATCH v4 5/5] mm: enable CONFIG_MOVABLE_NODE on non-x86 arches

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

Reza Arbab <arbab@linux.vnet.ibm.com> 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
N_MEMORY.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

> Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
> ---
>  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
>  	help
> -- 
> 1.8.3.1

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