Re: [PATCH v4 4/5] mm: make processing of movable_node arch-specific

From: Balbir Singh
Date: Tue Oct 11 2016 - 08:42:23 EST

On 07/10/16 05:36, Reza Arbab wrote:
> Currently, CONFIG_MOVABLE_NODE depends on X86_64. In preparation to
> enable it for other arches, we need to factor a detail which is unique
> to x86 out of the generic mm code.
> Specifically, as documented in kernel-parameters.txt, the use of
> "movable_node" should remain restricted to x86:
> movable_node [KNL,X86] Boot-time switch to enable the effects
> of CONFIG_MOVABLE_NODE=y. See mm/Kconfig for details.
> This option tells x86 to find movable nodes identified by the ACPI SRAT.
> On other arches, it would have no benefit, only the undesired side
> effect of setting bottom-up memblock allocation.
> Since #ifdef CONFIG_MOVABLE_NODE will no longer be enough to restrict
> this option to x86, move it to an arch-specific compilation unit
> instead.
> Signed-off-by: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>

Acked-by: Balbir Singh <bsingharora@xxxxxxxxx>