fvalog2_div
KUNIT_ASSERT_EQ(test, fvalog2_div(table_lg2sz, PT_MAX_VA_ADDRESS_LG2),
fvalog2_div(limited_pgsize_bitmap, num_items_lg2 + isz_lg2), 0);
prefix = fvalog2_div(range->va, range->max_vasz_lg2 - 1) ?