[PATCH v2] arm64: NUMA: Kconfig: Increase NODES_SHIFT to 4
Vanshidhar Konda
vanshikonda at os.amperecomputing.com
Thu Oct 29 16:37:52 EDT 2020
The current arm64 default config limits max NUMA nodes available on
system to 4 (NODES_SHIFT = 2). Today's arm64 systems can reach or
exceed 16 NUMA nodes. To accomodate current hardware and to fit
NODES_SHIFT within page flags on arm64, increase NODES_SHIFT to 4.
Discussion on v1 of the patch:
https://lkml.org/lkml/2020/10/20/767
Signed-off-by: Vanshidhar Konda <vanshikonda at os.amperecomputing.com>
---
arch/arm64/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f858c352f72a..cffcc677011f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -982,7 +982,7 @@ config NUMA
config NODES_SHIFT
int "Maximum NUMA Nodes (as a power of 2)"
range 1 10
- default "2"
+ default "4"
depends on NEED_MULTIPLE_NODES
help
Specify the maximum number of NUMA Nodes available on the target
--
2.28.0
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