[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <87wphkmzl6.fsf@linux.vnet.ibm.com>
Date: Fri, 07 Oct 2016 12:10:21 +0530
From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To: Reza Arbab <arbab@...ux.vnet.ibm.com>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Bharata B Rao <bharata@...ux.vnet.ibm.com>,
Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
Stewart Smith <stewart@...ux.vnet.ibm.com>,
Alistair Popple <apopple@....ibm.com>,
Balbir Singh <bsingharora@...il.com>,
Tang Chen <tangchen@...fujitsu.com>,
linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
devicetree@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v4 5/5] mm: enable CONFIG_MOVABLE_NODE on non-x86 arches
Reza Arbab <arbab@...ux.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@...ux.vnet.ibm.com>
> Signed-off-by: Reza Arbab <arbab@...ux.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
Powered by blists - more mailing lists