Merge "Sync: Enable post-copy by setting unprivileged_userfaultfd"

tripleo_ansible/roles/tripleo_nova_compute/tasks/configure.yml

@@ -19,6 +19,20 @@
     name: tripleo_nvdimm
   when: tripleo_nova_compute_pmem_namespaces  # not a bool
 
+- name: manage OS version 9 specific sysctls
+  when:
+    - ansible_facts['os_family'] == 'RedHat'
+    - ansible_facts['distribution_major_version'] is version('9', '==')
+  block:
+  - name: Enable post-copy by setting unprivileged_userfaultfd
+    sysctl:
+      name: "vm.unprivileged_userfaultfd"
+      value: 1
+      sysctl_set: true
+      sysctl_file: /etc/sysctl.d/99-tripleo-postcopy.conf
+      state: present
+      reload: true
+
 - name: enable/disable ksm
   block:
   - name: disable KSM on compute