Ensure Kernel version is compatible with target XRT version.

README.md

@@ -34,6 +34,7 @@ Role Variables
   Default to `true`.
 * **xilinx_xrt_version**: If *aws_fpga_xrt* is `true`, Xilinx XRT version to install.
   Default to `2019.1`.
+* **xilinx_xrt_ensure_compatible_kernel**: If `true`, ensure the Linux kernel installed is compatible. Default to `true`.
 
 * **aws_fpga_driver**: FPGA driver name. If specified, install and enable the specified Linux kernel driver.
   See [AWS FPGA linux kernel drivers](https://github.com/aws/aws-fpga/tree/master/sdk/linux_kernel_drivers) for the list of available drivers.

defaults/main.yml

@@ -19,3 +19,12 @@ xilinx_xrt_packages:
 
 s3_dev_ami_url: "https://aws-fpga-developer-ami.s3.amazonaws.com/"
 xrt_package: "{{ xilinx_xrt_packages[xilinx_xrt_version | string] }}"
+
+# Linux kernel version compatibles with AWS XRT
+# From https://github.com/aws/aws-fpga/blob/master/RELEASE_NOTES.md
+xilinx_xrt_ensure_compatible_kernel: true
+aws_xrt_kernels:
+  '2019.1': 3.10.0-957
+  '2018.3': 3.10.0-957
+  '2018.2': 3.10.0-957
+aws_linux_kernel_version: "{{ aws_xrt_kernels[xilinx_xrt_version | string] }}"

meta/main.yml

@@ -24,10 +24,20 @@ galaxy_info:
     - ec2
 
 dependencies:
+  - role: accelize.linux_kernel
+    vars:
+      kernel_version: "{{ aws_linux_kernel_version }}"
+    when:
+      # Managed by "accelize.xilinx_xrt" if not RHEL/CentOS 7
+      - ansible_os_family == 'RedHat'
+      - ansible_distribution_major_version == "7"
+      - xilinx_xrt_ensure_compatible_kernel | bool
+
   - role: accelize.xilinx_xrt
     when:
       - aws_fpga_xrt | bool
-      # AWS provides special packages for CentOS 7
-      - ansible_os_family == 'Debian'
+      # AWS provides special packages for RHEL/CentOS 7
+      - "ansible_os_family != 'RedHat' or
+         ansible_distribution_major_version != '7'"
     vars:
       xilinx_xrt_aws: true

molecule/default/playbook.yml

@@ -5,3 +5,5 @@
     - role: ansible-role-aws-fpga
   vars:
     aws_fpga_xrt: false
+    xilinx_xrt_ensure_compatible_kernel: false
+    reboot_on_kernel_update: false

molecule/default/requirements.yml

@@ -1,2 +1,3 @@
 ---
 - accelize.xilinx_xrt
+- accelize.linux_kernel