BACKPORT: arm64: Kconfig: Enable NODES_SPAN_OTHER_NODES config for NUMA

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. This patch enables NODES_SPAN_OTHER_NODES config for NUMA to support this type of NUMA layout. This patch is in open source review progress and is backported from: https://www.spinics.net/lists/arm-kernel/msg737306.html Signed-off-by: Hoan Tran <[email protected]> Signed-off-by: Khuong Dinh <[email protected]>
AmpereComputing · Apr 21, 2020 · 9db4e45 · 9db4e45
1 parent 44fb326
commit 9db4e45
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
@@ -842,6 +842,13 @@ config HOLES_IN_ZONE
 	def_bool y
 	depends on NUMA
 
+# 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.
+config NODES_SPAN_OTHER_NODES
+	def_bool y
+	depends on ACPI_NUMA
+
 source kernel/Kconfig.preempt
 source kernel/Kconfig.hz