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[PATCH v2 13/17] xen/arm: implement numa_node_to_arch_nid for device tree NUMA
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Wei Chen <wei.chen@xxxxxxx>
- Date: Tue, 10 Jan 2023 16:49:26 +0800
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- Cc: <nd@xxxxxxx>, Wei Chen <wei.chen@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Tue, 10 Jan 2023 08:55:19 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Nodisclaimer: true
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@xxxxxxx>
---
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(+)
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. */
--
2.25.1
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