Secret Hiding: Add secret hidden kernels to default test list

.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.

tests/integration_tests/performance/test_huge_pages.py

@@ -55,6 +55,11 @@ def check_hugetlbfs_in_use(pid: int, allocation_name: str):
     assert kernel_page_size_kib > 4
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1)
+    and global_props.cpu_architecture == "aarch64",
+    reason="Huge page tests with secret hidden kernels on ARM currently fail",
+)
 def test_hugetlbfs_boot(uvm_plain):
     """Tests booting a microvm with guest memory backed by 2MB hugetlbfs pages"""
 
@@ -69,6 +74,11 @@ def test_hugetlbfs_boot(uvm_plain):
     )
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1)
+    and global_props.cpu_architecture == "aarch64",
+    reason="Huge page tests with secret hidden kernels on ARM currently fail",
+)
 def test_hugetlbfs_snapshot(microvm_factory, guest_kernel_linux_5_10, rootfs):
     """
     Test hugetlbfs snapshot restore via uffd
@@ -100,6 +110,11 @@ def test_hugetlbfs_snapshot(microvm_factory, guest_kernel_linux_5_10, rootfs):
     check_hugetlbfs_in_use(vm.firecracker_pid, "/anon_hugepage")
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1)
+    and global_props.cpu_architecture == "aarch64",
+    reason="Huge page tests with secret hidden kernels on ARM currently fail",
+)
 def test_hugetlbfs_diff_snapshot(microvm_factory, uvm_plain):
     """
     Test hugetlbfs differential snapshot support.
@@ -144,6 +159,11 @@ def test_hugetlbfs_diff_snapshot(microvm_factory, uvm_plain):
     # Verify if the restored microvm works.
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1)
+    and global_props.cpu_architecture == "aarch64",
+    reason="Huge page tests with secret hidden kernels on ARM currently fail",
+)
 @pytest.mark.parametrize("huge_pages", HugePagesConfig)
 def test_ept_violation_count(
     microvm_factory,
@@ -225,6 +245,11 @@ def test_ept_violation_count(
     metrics.put_metric(metric, int(metric_value), "Count")
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1)
+    and global_props.cpu_architecture == "aarch64",
+    reason="Huge page tests with secret hidden kernels on ARM currently fail",
+)
 def test_negative_huge_pages_plus_balloon(uvm_plain):
     """Tests that huge pages and memory ballooning cannot be used together"""
     uvm_plain.memory_monitor = None

tests/integration_tests/performance/test_initrd.py

@@ -4,6 +4,7 @@
 import pytest
 
 from framework.microvm import HugePagesConfig, Serial
+from framework.properties import global_props
 
 INITRD_FILESYSTEM = "rootfs"
 
@@ -20,6 +21,11 @@ def uvm_with_initrd(microvm_factory, guest_kernel, record_property, artifact_dir
     yield uvm
 
 
+@pytest.mark.skipif(
+    global_props.host_linux_version_tpl > (6, 1)
+    and global_props.cpu_architecture == "aarch64",
+    reason="Huge page tests with secret hidden kernels on ARM currently fail",
+)
 @pytest.mark.parametrize("huge_pages", HugePagesConfig)
 def test_microvm_initrd_with_serial(uvm_with_initrd, huge_pages):
     """