Enable iommu support in grub

JIRA: YARDSTICK-895
It's required for sriov standalone yardstick tests.
This part of commit message will be deleted:
This code will be enabled when https://gerrit.opnfv.org/gerrit/#/c/47957/ will be merged,
because it requires host reboot.

Change-Id: I0ec9cbf90a9d83d54e545fcf421b8baf206601a4
Signed-off-by: Jan Malanik <janx.malanik@intel.com>
Signed-off-by: Malanik Jan <janx.malanik@intel.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/ansible/roles/enable_iommu_on_boot/tasks/manual_modify_grub.yml b/ansible/roles/enable_iommu_on_boot/tasks/manual_modify_grub.yml
new file mode 100644
index 000000000..6760c3f9d
--- /dev/null
+++ b/ansible/roles/enable_iommu_on_boot/tasks/manual_modify_grub.yml
@@ -0,0 +1,34 @@
+# Copyright (c) 2017 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+
+
+- name: check if iommu is set by this role in /boot grub.cfg files
+  lineinfile:
+    path: "{{ item.path }}"
+    regexp: '{{ hugepages_params }}{{ iommu_boot_params }}'
+    line: ''
+  #changed_when: no
+  check_mode: yes
+  register: is_mine_iommu_boot_grub
+  ignore_errors: True
+
+- name: added iommu to grub manually because we can't run update-grub in chroot
+  replace:
+    path: "{{ item.path }}"
+    regexp: '(.*linux\s+/boot/vmlinuz.*)$'
+    replace: '\1{{ iommu_boot_params }}'
+  when: is_mine_iommu_boot_grub.msg != "line replaced"
+
+- debug: var=ansible_kernel