From 8a0fa12483ace97d13ed5ed3c7adc6ae7ba64a75 Mon Sep 17 00:00:00 2001
From: jamepark4 <jparker@redhat.com>
Date: Mon, 16 Feb 2026 16:45:51 -0500
Subject: [PATCH] [libvirt_manager] Allow for multi-numa guest deployment

Allow for guests to deploy with multiple numa nodes if a numa key is
supplied to the cifmw_libvirt_manager_configuration when defining a
guest. This is useful when testing multi-numa environments that take
advantage of NUMA affinity and managing cpu policy across a slightly
more complex architecture. Logic assumes operator will define an evenly
distributed system and will not take into account remainders.

Signed-off-by: James Parker jparker@redhat.com
---
 roles/libvirt_manager/templates/domain.xml.j2 | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/roles/libvirt_manager/templates/domain.xml.j2 b/roles/libvirt_manager/templates/domain.xml.j2
index d52bfb4f9e..de2c215778 100644
--- a/roles/libvirt_manager/templates/domain.xml.j2
+++ b/roles/libvirt_manager/templates/domain.xml.j2
@@ -16,7 +16,20 @@
     <boot dev='hd'/>
     <bootmenu enable='{{ vm_data.bootmenu_enable | default('no') }}'/>
   </os>
-  <cpu mode='host-passthrough' check='none'/>
+  <cpu mode='host-passthrough' check='none'>
+{% if vm_data.numa is defined and vm_data.numa|int > 1 %}
+    <numa>
+      {% set cores_per_node = (vm_data.cpus|int // vm_data.numa|int) %}
+      {% set mem_per_node = (vm_data.memory|int // vm_data.numa|int) %}
+      {% set cpu_ns = namespace(cpu_start=0) %}
+        {% for i in range(vm_data.numa|int) %}
+          {% set cpu_end = cpu_ns.cpu_start + cores_per_node - 1 %}
+          <cell id='{{ i }}' cpus='{{ cpu_ns.cpu_start }}-{{ cpu_end }}' memory='{{ mem_per_node }}' unit='GB'/>
+          {% set cpu_ns.cpu_start = cpu_end + 1 %}
+        {% endfor %}
+    </numa>
+{% endif %}
+  </cpu>
   <clock offset='utc'>
     <timer name='rtc' tickpolicy='catchup'/>
     <timer name='pit' tickpolicy='delay'/>