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[PATCH 17/21] xen/arm: Export Dom0 vCPU-to-NUMA node mapping to Device Tree
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
- Date: Sun, 24 May 2026 09:02:05 +0900
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- Cc: andrew.cooper3@xxxxxxxxxx, anthony.perard@xxxxxxxxxx, michal.orzel@xxxxxxx, jbeulich@xxxxxxxx, julien@xxxxxxx, roger.pau@xxxxxxxxxx, sstabellini@xxxxxxxxxx, jgross@xxxxxxxx, bertrand.marquis@xxxxxxx, Volodymyr_Babchuk@xxxxxxxx, dfaggioli@xxxxxxxx, gwd@xxxxxxxxxxxxxx, Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
- Delivery-date: Sun, 24 May 2026 00:03:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Export the mapping between Domain-0 vCPUs and their assigned NUMA nodes
into the Device Tree generated for Domain-0.
---
xen/arch/arm/domain_build.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index a62adafa19..11d0fa1233 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1373,6 +1373,15 @@ int __init make_cpus_node(const struct domain *d, struct
kernel_info *kinfo)
return res;
}
+#ifdef CONFIG_NUMA
+ {
+ nodeid_t target_node = dom0_vcpu_to_node(d, cpu);
+ res = fdt_property_u32(fdt, "numa-node-id", target_node);
+ if ( res )
+ return res;
+ }
+#endif /* CONFIG_NUMA */
+
res = fdt_end_node(fdt);
if ( res )
return res;
--
2.43.0
|
