* arm64: Kconfig: support for nodes spanning other nodes
[not found] <CGME20201029060015epcas2p2c9969a6782d8214bcbefa36ffad8e10c@epcas2p2.samsung.com>
@ 2020-10-29 6:19 ` Janghyuck Kim
2020-11-26 15:31 ` Catalin Marinas
0 siblings, 1 reply; 2+ messages in thread
From: Janghyuck Kim @ 2020-10-29 6:19 UTC (permalink / raw)
Cc: janghyuck.kim, hyesoo.yu, pullip.cho, Catalin Marinas,
Will Deacon, linux-arm-kernel, linux-kernel
To support NUMA systems whose physical address layout is not continuous
on one node, nodes spanning other nodes feature is required.
Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>
---
arch/arm64/Kconfig | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 49b8d017cba6..18ff7ce9dd60 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1004,6 +1004,14 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
config HOLES_IN_ZONE
def_bool y
+# Some NUMA nodes have memory ranges that span
+# other nodes. Even though a pfn is valid and
+# between a node's start and end pfns, it may not
+# reside on that node. See memmap_init_zone()
+# for details.
+config NODES_SPAN_OTHER_NODES
+ depends on NUMA
+
source "kernel/Kconfig.hz"
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
--
2.28.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: arm64: Kconfig: support for nodes spanning other nodes
2020-10-29 6:19 ` arm64: Kconfig: support for nodes spanning other nodes Janghyuck Kim
@ 2020-11-26 15:31 ` Catalin Marinas
0 siblings, 0 replies; 2+ messages in thread
From: Catalin Marinas @ 2020-11-26 15:31 UTC (permalink / raw)
To: Janghyuck Kim
Cc: hyesoo.yu, pullip.cho, Will Deacon, linux-arm-kernel, linux-kernel
On Thu, Oct 29, 2020 at 03:19:50PM +0900, Janghyuck Kim wrote:
> To support NUMA systems whose physical address layout is not continuous
> on one node, nodes spanning other nodes feature is required.
>
> Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>
> ---
> arch/arm64/Kconfig | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 49b8d017cba6..18ff7ce9dd60 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -1004,6 +1004,14 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
> config HOLES_IN_ZONE
> def_bool y
>
> +# Some NUMA nodes have memory ranges that span
> +# other nodes. Even though a pfn is valid and
> +# between a node's start and end pfns, it may not
> +# reside on that node. See memmap_init_zone()
> +# for details.
> +config NODES_SPAN_OTHER_NODES
> + depends on NUMA
I guess this patch no longer makes sense after commit acd3f5c441e9 ("mm:
remove early_pfn_in_nid() and CONFIG_NODES_SPAN_OTHER_NODES").
--
Catalin
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-10-29 6:19 ` arm64: Kconfig: support for nodes spanning other nodes Janghyuck Kim
2020-11-26 15:31 ` Catalin Marinas
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