ci: Add secret hiding kernel to defaults buildkite

Adding the secret hiding kernel as a default for the buildkite pipeline,
this will mean that PR's made against the branch will now be run with
the new secret hiding enabled amis.

Some tests have been marked to skip as they are kernel dependent so
while we are compiling our kernel in CI these could change again.

Signed-off-by: Jack Thomson <[email protected]>

Author: JackThomson2

.buildkite/common.py

@@ -27,6 +27,7 @@
 DEFAULT_PLATFORMS = [
     ("al2", "linux_5.10"),
     ("al2023", "linux_6.1"),
+    ("ubuntu24", "secret_hiding"),
 ]
 
 

tests/integration_tests/functional/test_cpu_features_host_vs_guest.py

@@ -15,6 +15,8 @@
 
 import os
 
+import pytest
+
 from framework import utils
 from framework.properties import global_props
 from framework.utils_cpuid import CPU_FEATURES_CMD, CpuModel
@@ -157,6 +159,10 @@
 }
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1),
+    reason="We don't currently track features for host kernels above 6.1.",
+)
 def test_host_vs_guest_cpu_features(uvm_plain_any):
     """Check CPU features host vs guest"""
 

tests/integration_tests/functional/test_shut_down.py

@@ -4,11 +4,17 @@
 
 import platform
 
+import pytest
 from packaging import version
 
 from framework import utils
+from framework.properties import global_props
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1),
+    reason="The number of threads associated to firecracker changes in newer kernels",
+)
 def test_reboot(uvm_plain_any):
     """
     Test reboot from guest.