[PATCH v2 2/9] iommupt/kunit: Skip test configs without supported features

[Jason Gunthorpe <jgg@nvidia.com>]

Some of the tests configs can test features we don't currently enable,
like TTBR1 on ARMv8. Instead of blowing up, skip the test. When
CONFIG_DEBUG_GENERIC_PT is set all features are force enabled during
the build so everything can be tested. That is the normal mode for the
kunit.py runner.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
 drivers/iommu/generic_pt/kunit_iommu.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/iommu/generic_pt/kunit_iommu.h b/drivers/iommu/generic_pt/kunit_iommu.h
index 79d7f9c8e7868f..558e161eacb05f 100644
--- a/drivers/iommu/generic_pt/kunit_iommu.h
+++ b/drivers/iommu/generic_pt/kunit_iommu.h
@@ -134,6 +134,16 @@ static int pt_kunit_priv_init(struct kunit *test, struct kunit_iommu_priv *priv)
 
 #ifdef kunit_fmt_cfgs
 	priv->cfg = kunit_fmt_cfgs[((uintptr_t)test->param_value) - 1];
+	/*
+	 * Without CONFIG_DEBUG_GENERIC_PT only the format's compiled-in
+	 * PT_SUPPORTED_FEATURES are available, so cfgs requesting bits outside
+	 * that set cannot be tested.
+	 */
+	if (priv->cfg.common.features & ~KUNIT_PT_SUPPORTED_FEATURES)
+		kunit_skip(
+			test,
+			"cfg requires features not built into this format (enable CONFIG_DEBUG_GENERIC_PT)");
+
 	/*
 	 * The format can set a list of features that the kunit_fmt_cfgs
 	 * controls, other features are default to on.
-- 
2.43.0