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This limits level expansion because the starting level can accommodate only the maximum virtual address requested. Signed-off-by: Ankit Soni --- drivers/iommu/generic_pt/fmt/amdv1.h | 1 + drivers/iommu/generic_pt/kunit_iommu_pt.h | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/generic_pt/fmt/amdv1.h b/drivers/iommu/generic_p= t/fmt/amdv1.h index bc04d482c12f..289c1c010e18 100644 --- a/drivers/iommu/generic_pt/fmt/amdv1.h +++ b/drivers/iommu/generic_pt/fmt/amdv1.h @@ -406,6 +406,7 @@ amdv1pt_iommu_fmt_hw_info(struct pt_iommu_amdv1 *table, static const struct pt_iommu_amdv1_cfg amdv1_kunit_fmt_cfgs[] =3D { /* Matches what io_pgtable does */ [0] =3D { .starting_level =3D 2 }, + [1] =3D { .starting_level =3D 2, .common.hw_max_vasz_lg2 =3D 32 }, }; #define kunit_fmt_cfgs amdv1_kunit_fmt_cfgs enum { KUNIT_FMT_FEATURES =3D 0 }; diff --git a/drivers/iommu/generic_pt/kunit_iommu_pt.h b/drivers/iommu/gene= ric_pt/kunit_iommu_pt.h index e8a63c8ea850..ece1c9b8c55d 100644 --- a/drivers/iommu/generic_pt/kunit_iommu_pt.h +++ b/drivers/iommu/generic_pt/kunit_iommu_pt.h @@ -112,8 +112,9 @@ static void test_increase_level(struct kunit *test) if (IS_32BIT) kunit_skip(test, "Unable to test on 32bit"); =20 - KUNIT_ASSERT_GT(test, common->max_vasz_lg2, - pt_top_range(common).max_vasz_lg2); + if (common->max_vasz_lg2 <=3D pt_top_range(common).max_vasz_lg2) + kunit_skip(test, + "max_vasz_lg2 fits in starting level, no growth possible"); =20 /* Add every possible level to the max */ while (common->max_vasz_lg2 !=3D pt_top_range(common).max_vasz_lg2) { --=20 2.43.0