Hi Wei,
On 11/08/2021 11:23, Wei Chen wrote:
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.c...@arm.com>
---
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.
+ */
Such comment can rot easily if x86 decides to bump there values. But
given the value is the same, I think it would make sense to move the
define to xen/numa.h.
+#define NODES_SHIFT 6
+
+#else
/* Fake one node for now. See also node_online_map. */
#define cpu_to_node(cpu) 0
Cheers,
--
Julien Grall
