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[v2,13/17] xen/arm: implement numa_node_to_arch_nid for device tree NUMA

Message ID 20230110084930.1095203-14-wei.chen@arm.com (mailing list archive)
State New, archived
Headers show
Series Device tree based NUMA support for Arm - Part#3 | expand

Commit Message

Wei Chen Jan. 10, 2023, 8:49 a.m. UTC 
Device tree based NUMA doesn't have the proximity domain like
ACPI. So we can return node id directly as arch nid.

Signed-off-by: Wei Chen <wei.chen@arm.com>
---
v1 -> v2:
1. Use numa_node_to_arch_nid instead of dummy node_to_pxm.
---
 xen/arch/arm/include/asm/numa.h | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/xen/arch/arm/include/asm/numa.h b/xen/arch/arm/include/asm/numa.h
index 34eec9378c..a0b8d7a11c 100644
--- a/xen/arch/arm/include/asm/numa.h
+++ b/xen/arch/arm/include/asm/numa.h
@@ -47,6 +47,15 @@  extern void numa_detect_cpu_node(unsigned int cpu);
 extern int numa_device_tree_init(const void *fdt);
 extern void numa_init(void);
 
+/*
+ * Device tree NUMA doesn't have architecural node id.
+ * So we can just return node id as arch nid.
+ */
+static inline unsigned int numa_node_to_arch_nid(nodeid_t n)
+{
+    return n;
+}
+
 #else
 
 /* Fake one node for now. See also node_online_map. */