Re: [PATCH i-g-t 2/3] tools/vmtb: Skip double migration tests on no-debug config

["Bernatowicz, Marcin" <marcin.bernatowicz@linux.intel.com>]

LGTM,

Reviewed-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>

On 10/15/2026 9:10 AM, Adam Miszczak wrote:
> Double migration tests depend on the debugfs 'resfix_stoppers' hook,
> which is only exposed in a KMD debug build.
> Add autoused 'is_test_supported' fixture to BaseTestDoubleMigration
> that probes for the hook and skips test execution when it's absent
> on a guest (first VM).
>
> Signed-off-by: Adam Miszczak <adam.miszczak@linux.intel.com>
> ---
>   tools/vmtb/vmm_flows/test_migration.py | 13 +++++++++++++
>   1 file changed, 13 insertions(+)
>
> diff --git a/tools/vmtb/vmm_flows/test_migration.py b/tools/vmtb/vmm_flows/test_migration.py
> index 6853d87f4..c4f3f00a4 100644
> --- a/tools/vmtb/vmm_flows/test_migration.py
> +++ b/tools/vmtb/vmm_flows/test_migration.py
> @@ -785,6 +785,19 @@ class BaseTestDoubleMigration:
>       - restoring from initial (1st) or latter (2nd) migration
>       """
>   
> +    @pytest.fixture(scope='class', autouse=True, name='is_test_supported')
> +    def fixture_is_test_supported(self, setup_vms):
> +        """Skip test on no-debug setup lacking the required debugfs 'resfix_stoppers' hook."""
> +        ts: VmmTestingSetup = setup_vms
> +        vm: VirtualMachine = ts.get_vm[0]
> +        vm_debugfs_path = vm.get_dut().driver.debugfs_path
> +
> +        try:
> +            vm.read_file_content(f'{vm_debugfs_path}/gt0/vf/resfix_stoppers')
> +        except exceptions.GuestError:
> +            logger.warning("Required debug hook not found (KMD no-debug config?)")
> +            pytest.skip("Test scenario not supported on no-debug config")
> +
>       def __set_debugfs_resfix_stoppers(self, vm: VirtualMachine, stage: ResfixWaitStage):
>           """Set resfix_stoppers:
>           predefined checkpoints that allow the migration process to pause at specific stages.