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[PATCH v3 13/22] xen/arm: Export Dom0 vCPU-to-NUMA node mapping to Device Tree
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
- Date: Fri, 19 Jun 2026 16:50:01 +0900
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- Cc: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Fri, 19 Jun 2026 07:50:42 +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.
Signed-off-by: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
---
xen/arch/arm/domain_build.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index f5fd065435..b4783fcfc9 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1381,6 +1381,14 @@ int __init make_cpus_node(const struct domain *d, struct
kernel_info *kinfo)
return res;
}
+ if ( IS_ENABLED(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;
+ }
+
res = fdt_end_node(fdt);
if ( res )
return res;
--
2.43.0
|
