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[XEN RFC PATCH 14/40] xen/arm: set NUMA nodes max number to 64 by default
- To: <wei.chen@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>, <sstabellini@xxxxxxxxxx>, <julien@xxxxxxx>, <jbeulich@xxxxxxxx>
- From: Wei Chen <wei.chen@xxxxxxx>
- Date: Wed, 11 Aug 2021 18:23:57 +0800
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- Cc: <Bertrand.Marquis@xxxxxxx>
- Delivery-date: Wed, 11 Aug 2021 10:25:42 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Nodisclaimer: true
Today's Arm64 systems can reach or exceed 16 NUMA nodes, so
we set the number to 64 to match with x86.
Signed-off-by: Wei Chen <wei.chen@xxxxxxx>
---
xen/include/asm-arm/numa.h | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/xen/include/asm-arm/numa.h b/xen/include/asm-arm/numa.h
index 1162c702df..b2982f9053 100644
--- a/xen/include/asm-arm/numa.h
+++ b/xen/include/asm-arm/numa.h
@@ -5,7 +5,15 @@
typedef u8 nodeid_t;
-#if !defined(CONFIG_NUMA)
+#if defined(CONFIG_NUMA)
+
+/*
+ * Same as x86, we set the max number of NUMA nodes to 64 and
+ * set the number of NUMA memory block number to 128.
+ */
+#define NODES_SHIFT 6
+
+#else
/* Fake one node for now. See also node_online_map. */
#define cpu_to_node(cpu) 0
--
2.25.1
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