Merge v6.8-rc1 into drm-misc-fixes

Let's kickstart the 6.8 fix cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

8 files changed, 604 insertions, 2485 deletions

diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile
index ba7baa622675..d6183b3d7688 100644
--- a/drivers/gpu/drm/tests/Makefile
+++ b/drivers/gpu/drm/tests/Makefile
@@ -9,15 +9,16 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \
 	drm_connector_test.o \
 	drm_damage_helper_test.o \
 	drm_dp_mst_helper_test.o \
+	drm_exec_test.o \
 	drm_format_helper_test.o \
 	drm_format_test.o \
 	drm_framebuffer_test.o \
+	drm_gem_shmem_test.o \
 	drm_managed_test.o \
 	drm_mm_test.o \
 	drm_modes_test.o \
 	drm_plane_helper_test.o \
 	drm_probe_helper_test.o \
-	drm_rect_test.o	\
-	drm_exec_test.o
+	drm_rect_test.o
 
 CFLAGS_drm_mm_test.o := $(DISABLE_STRUCTLEAK_PLUGIN)
diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c b/drivers/gpu/drm/tests/drm_buddy_test.c
index 09ee6f6af896..ea2af6bd9abe 100644
--- a/drivers/gpu/drm/tests/drm_buddy_test.c
+++ b/drivers/gpu/drm/tests/drm_buddy_test.c
@@ -13,315 +13,11 @@
 
 #include "../lib/drm_random.h"
 
-#define TIMEOUT(name__)								\
-	unsigned long name__ = jiffies + MAX_SCHEDULE_TIMEOUT
-
-static unsigned int random_seed;
-
 static inline u64 get_size(int order, u64 chunk_size)
 {
 	return (1 << order) * chunk_size;
 }
 
-__printf(2, 3)
-static bool __timeout(unsigned long timeout, const char *fmt, ...)
-{
-	va_list va;
-
-	if (!signal_pending(current)) {
-		cond_resched();
-		if (time_before(jiffies, timeout))
-			return false;
-	}
-
-	if (fmt) {
-		va_start(va, fmt);
-		vprintk(fmt, va);
-		va_end(va);
-	}
-
-	return true;
-}
-
-static void __dump_block(struct kunit *test, struct drm_buddy *mm,
-			 struct drm_buddy_block *block, bool buddy)
-{
-	kunit_err(test, "block info: header=%llx, state=%u, order=%d, offset=%llx size=%llx root=%d buddy=%d\n",
-		  block->header, drm_buddy_block_state(block),
-			  drm_buddy_block_order(block), drm_buddy_block_offset(block),
-			  drm_buddy_block_size(mm, block), !block->parent, buddy);
-}
-
-static void dump_block(struct kunit *test, struct drm_buddy *mm,
-		       struct drm_buddy_block *block)
-{
-	struct drm_buddy_block *buddy;
-
-	__dump_block(test, mm, block, false);
-
-	buddy = drm_get_buddy(block);
-	if (buddy)
-		__dump_block(test, mm, buddy, true);
-}
-
-static int check_block(struct kunit *test, struct drm_buddy *mm,
-		       struct drm_buddy_block *block)
-{
-	struct drm_buddy_block *buddy;
-	unsigned int block_state;
-	u64 block_size;
-	u64 offset;
-	int err = 0;
-
-	block_state = drm_buddy_block_state(block);
-
-	if (block_state != DRM_BUDDY_ALLOCATED &&
-	    block_state != DRM_BUDDY_FREE && block_state != DRM_BUDDY_SPLIT) {
-		kunit_err(test, "block state mismatch\n");
-		err = -EINVAL;
-	}
-
-	block_size = drm_buddy_block_size(mm, block);
-	offset = drm_buddy_block_offset(block);
-
-	if (block_size < mm->chunk_size) {
-		kunit_err(test, "block size smaller than min size\n");
-		err = -EINVAL;
-	}
-
-	/* We can't use is_power_of_2() for a u64 on 32-bit systems. */
-	if (block_size & (block_size - 1)) {
-		kunit_err(test, "block size not power of two\n");
-		err = -EINVAL;
-	}
-
-	if (!IS_ALIGNED(block_size, mm->chunk_size)) {
-		kunit_err(test, "block size not aligned to min size\n");
-		err = -EINVAL;
-	}
-
-	if (!IS_ALIGNED(offset, mm->chunk_size)) {
-		kunit_err(test, "block offset not aligned to min size\n");
-		err = -EINVAL;
-	}
-
-	if (!IS_ALIGNED(offset, block_size)) {
-		kunit_err(test, "block offset not aligned to block size\n");
-		err = -EINVAL;
-	}
-
-	buddy = drm_get_buddy(block);
-
-	if (!buddy && block->parent) {
-		kunit_err(test, "buddy has gone fishing\n");
-		err = -EINVAL;
-	}
-
-	if (buddy) {
-		if (drm_buddy_block_offset(buddy) != (offset ^ block_size)) {
-			kunit_err(test, "buddy has wrong offset\n");
-			err = -EINVAL;
-		}
-
-		if (drm_buddy_block_size(mm, buddy) != block_size) {
-			kunit_err(test, "buddy size mismatch\n");
-			err = -EINVAL;
-		}
-
-		if (drm_buddy_block_state(buddy) == block_state &&
-		    block_state == DRM_BUDDY_FREE) {
-			kunit_err(test, "block and its buddy are free\n");
-			err = -EINVAL;
-		}
-	}
-
-	return err;
-}
-
-static int check_blocks(struct kunit *test, struct drm_buddy *mm,
-			struct list_head *blocks, u64 expected_size, bool is_contiguous)
-{
-	struct drm_buddy_block *block;
-	struct drm_buddy_block *prev;
-	u64 total;
-	int err = 0;
-
-	block = NULL;
-	prev = NULL;
-	total = 0;
-
-	list_for_each_entry(block, blocks, link) {
-		err = check_block(test, mm, block);
-
-		if (!drm_buddy_block_is_allocated(block)) {
-			kunit_err(test, "block not allocated\n");
-			err = -EINVAL;
-		}
-
-		if (is_contiguous && prev) {
-			u64 prev_block_size;
-			u64 prev_offset;
-			u64 offset;
-
-			prev_offset = drm_buddy_block_offset(prev);
-			prev_block_size = drm_buddy_block_size(mm, prev);
-			offset = drm_buddy_block_offset(block);
-
-			if (offset != (prev_offset + prev_block_size)) {
-				kunit_err(test, "block offset mismatch\n");
-				err = -EINVAL;
-			}
-		}
-
-		if (err)
-			break;
-
-		total += drm_buddy_block_size(mm, block);
-		prev = block;
-	}
-
-	if (!err) {
-		if (total != expected_size) {
-			kunit_err(test, "size mismatch, expected=%llx, found=%llx\n",
-				  expected_size, total);
-			err = -EINVAL;
-		}
-		return err;
-	}
-
-	if (prev) {
-		kunit_err(test, "prev block, dump:\n");
-		dump_block(test, mm, prev);
-	}
-
-	kunit_err(test, "bad block, dump:\n");
-	dump_block(test, mm, block);
-
-	return err;
-}
-
-static int check_mm(struct kunit *test, struct drm_buddy *mm)
-{
-	struct drm_buddy_block *root;
-	struct drm_buddy_block *prev;
-	unsigned int i;
-	u64 total;
-	int err = 0;
-
-	if (!mm->n_roots) {
-		kunit_err(test, "n_roots is zero\n");
-		return -EINVAL;
-	}
-
-	if (mm->n_roots != hweight64(mm->size)) {
-		kunit_err(test, "n_roots mismatch, n_roots=%u, expected=%lu\n",
-			  mm->n_roots, hweight64(mm->size));
-		return -EINVAL;
-	}
-
-	root = NULL;
-	prev = NULL;
-	total = 0;
-
-	for (i = 0; i < mm->n_roots; ++i) {
-		struct drm_buddy_block *block;
-		unsigned int order;
-
-		root = mm->roots[i];
-		if (!root) {
-			kunit_err(test, "root(%u) is NULL\n", i);
-			err = -EINVAL;
-			break;
-		}
-
-		err = check_block(test, mm, root);
-
-		if (!drm_buddy_block_is_free(root)) {
-			kunit_err(test, "root not free\n");
-			err = -EINVAL;
-		}
-
-		order = drm_buddy_block_order(root);
-
-		if (!i) {
-			if (order != mm->max_order) {
-				kunit_err(test, "max order root missing\n");
-				err = -EINVAL;
-			}
-		}
-
-		if (prev) {
-			u64 prev_block_size;
-			u64 prev_offset;
-			u64 offset;
-
-			prev_offset = drm_buddy_block_offset(prev);
-			prev_block_size = drm_buddy_block_size(mm, prev);
-			offset = drm_buddy_block_offset(root);
-
-			if (offset != (prev_offset + prev_block_size)) {
-				kunit_err(test, "root offset mismatch\n");
-				err = -EINVAL;
-			}
-		}
-
-		block = list_first_entry_or_null(&mm->free_list[order],
-						 struct drm_buddy_block, link);
-		if (block != root) {
-			kunit_err(test, "root mismatch at order=%u\n", order);
-			err = -EINVAL;
-		}
-
-		if (err)
-			break;
-
-		prev = root;
-		total += drm_buddy_block_size(mm, root);
-	}
-
-	if (!err) {
-		if (total != mm->size) {
-			kunit_err(test, "expected mm size=%llx, found=%llx\n",
-				  mm->size, total);
-			err = -EINVAL;
-		}
-		return err;
-	}
-
-	if (prev) {
-		kunit_err(test, "prev root(%u), dump:\n", i - 1);
-		dump_block(test, mm, prev);
-	}
-
-	if (root) {
-		kunit_err(test, "bad root(%u), dump:\n", i);
-		dump_block(test, mm, root);
-	}
-
-	return err;
-}
-
-static void mm_config(u64 *size, u64 *chunk_size)
-{
-	DRM_RND_STATE(prng, random_seed);
-	u32 s, ms;
-
-	/* Nothing fancy, just try to get an interesting bit pattern */
-
-	prandom_seed_state(&prng, random_seed);
-
-	/* Let size be a random number of pages up to 8 GB (2M pages) */
-	s = 1 + drm_prandom_u32_max_state((BIT(33 - 12)) - 1, &prng);
-	/* Let the chunk size be a random power of 2 less than size */
-	ms = BIT(drm_prandom_u32_max_state(ilog2(s), &prng));
-	/* Round size down to the chunk size */
-	s &= -ms;
-
-	/* Convert from pages to bytes */
-	*chunk_size = (u64)ms << 12;
-	*size = (u64)s << 12;
-}
-
 static void drm_test_buddy_alloc_pathological(struct kunit *test)
 {
 	u64 mm_size, size, start = 0;
@@ -403,96 +99,6 @@ static void drm_test_buddy_alloc_pathological(struct kunit *test)
 	drm_buddy_fini(&mm);
 }
 
-static void drm_test_buddy_alloc_smoke(struct kunit *test)
-{
-	u64 mm_size, chunk_size, start = 0;
-	unsigned long flags = 0;
-	struct drm_buddy mm;
-	int *order;
-	int i;
-
-	DRM_RND_STATE(prng, random_seed);
-	TIMEOUT(end_time);
-
-	mm_config(&mm_size, &chunk_size);
-
-	KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, chunk_size),
-			       "buddy_init failed\n");
-
-	order = drm_random_order(mm.max_order + 1, &prng);
-	KUNIT_ASSERT_TRUE(test, order);
-
-	for (i = 0; i <= mm.max_order; ++i) {
-		struct drm_buddy_block *block;
-		int max_order = order[i];
-		bool timeout = false;
-		LIST_HEAD(blocks);
-		u64 total, size;
-		LIST_HEAD(tmp);
-		int order, err;
-
-		KUNIT_ASSERT_FALSE_MSG(test, check_mm(test, &mm),
-				       "pre-mm check failed, abort\n");
-
-		order = max_order;
-		total = 0;
-
-		do {
-retry:
-			size = get_size(order, chunk_size);
-			err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, size, &tmp, flags);
-			if (err) {
-				if (err == -ENOMEM) {
-					KUNIT_FAIL(test, "buddy_alloc hit -ENOMEM with order=%d\n",
-						   order);
-				} else {
-					if (order--) {
-						err = 0;
-						goto retry;
-					}
-
-					KUNIT_FAIL(test, "buddy_alloc with order=%d failed\n",
-						   order);
-				}
-
-				break;
-			}
-
-			block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
-			KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
-			list_move_tail(&block->link, &blocks);
-			KUNIT_EXPECT_EQ_MSG(test, drm_buddy_block_order(block), order,
-					    "buddy_alloc order mismatch\n");
-
-			total += drm_buddy_block_size(&mm, block);
-
-			if (__timeout(end_time, NULL)) {
-				timeout = true;
-				break;
-			}
-		} while (total < mm.size);
-
-		if (!err)
-			err = check_blocks(test, &mm, &blocks, total, false);
-
-		drm_buddy_free_list(&mm, &blocks);
-
-		if (!err) {
-			KUNIT_EXPECT_FALSE_MSG(test, check_mm(test, &mm),
-					       "post-mm check failed\n");
-		}
-
-		if (err || timeout)
-			break;
-
-		cond_resched();
-	}
-
-	kfree(order);
-	drm_buddy_fini(&mm);
-}
-
 static void drm_test_buddy_alloc_pessimistic(struct kunit *test)
 {
 	u64 mm_size, size, start = 0;
@@ -634,64 +240,6 @@ static void drm_test_buddy_alloc_optimistic(struct kunit *test)
 	drm_buddy_fini(&mm);
 }
 
-static void drm_test_buddy_alloc_range(struct kunit *test)
-{
-	unsigned long flags = DRM_BUDDY_RANGE_ALLOCATION;
-	u64 offset, size, rem, chunk_size, end;
-	unsigned long page_num;
-	struct drm_buddy mm;
-	LIST_HEAD(blocks);
-
-	mm_config(&size, &chunk_size);
-
-	KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, size, chunk_size),
-			       "buddy_init failed");
-
-	KUNIT_ASSERT_FALSE_MSG(test, check_mm(test, &mm),
-			       "pre-mm check failed, abort!");
-
-	rem = mm.size;
-	offset = 0;
-
-	for_each_prime_number_from(page_num, 1, ULONG_MAX - 1) {
-		struct drm_buddy_block *block;
-		LIST_HEAD(tmp);
-
-		size = min(page_num * mm.chunk_size, rem);
-		end = offset + size;
-
-		KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, offset, end,
-								    size, mm.chunk_size,
-									&tmp, flags),
-				"alloc_range with offset=%llx, size=%llx failed\n", offset, size);
-
-		block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
-		KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_range has no blocks\n");
-
-		KUNIT_ASSERT_EQ_MSG(test, drm_buddy_block_offset(block), offset,
-				    "alloc_range start offset mismatch, found=%llx, expected=%llx\n",
-							drm_buddy_block_offset(block), offset);
-
-		KUNIT_ASSERT_FALSE(test, check_blocks(test, &mm, &tmp, size, true));
-
-		list_splice_tail(&tmp, &blocks);
-
-		offset += size;
-
-		rem -= size;
-		if (!rem)
-			break;
-
-		cond_resched();
-	}
-
-	drm_buddy_free_list(&mm, &blocks);
-
-	KUNIT_EXPECT_FALSE_MSG(test, check_mm(test, &mm), "post-mm check failed\n");
-
-	drm_buddy_fini(&mm);
-}
-
 static void drm_test_buddy_alloc_limit(struct kunit *test)
 {
 	u64 size = U64_MAX, start = 0;
@@ -727,29 +275,16 @@ static void drm_test_buddy_alloc_limit(struct kunit *test)
 	drm_buddy_fini(&mm);
 }
 
-static int drm_buddy_suite_init(struct kunit_suite *suite)
-{
-	while (!random_seed)
-		random_seed = get_random_u32();
-
-	kunit_info(suite, "Testing DRM buddy manager, with random_seed=0x%x\n", random_seed);
-
-	return 0;
-}
-
 static struct kunit_case drm_buddy_tests[] = {
 	KUNIT_CASE(drm_test_buddy_alloc_limit),
-	KUNIT_CASE(drm_test_buddy_alloc_range),
 	KUNIT_CASE(drm_test_buddy_alloc_optimistic),
 	KUNIT_CASE(drm_test_buddy_alloc_pessimistic),
-	KUNIT_CASE(drm_test_buddy_alloc_smoke),
 	KUNIT_CASE(drm_test_buddy_alloc_pathological),
 	{}
 };
 
 static struct kunit_suite drm_buddy_test_suite = {
 	.name = "drm_buddy",
-	.suite_init = drm_buddy_suite_init,
 	.test_cases = drm_buddy_tests,
 };
 
diff --git a/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c b/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c
index 545beea33e8c..d916e548fcb1 100644
--- a/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c
@@ -42,13 +42,13 @@ static const struct drm_dp_mst_calc_pbn_mode_test drm_dp_mst_calc_pbn_mode_cases
 		.clock = 332880,
 		.bpp = 24,
 		.dsc = true,
-		.expected = 50
+		.expected = 1191
 	},
 	{
 		.clock = 324540,
 		.bpp = 24,
 		.dsc = true,
-		.expected = 49
+		.expected = 1161
 	},
 };
 
@@ -56,7 +56,7 @@ static void drm_test_dp_mst_calc_pbn_mode(struct kunit *test)
 {
 	const struct drm_dp_mst_calc_pbn_mode_test *params = test->param_value;
 
-	KUNIT_EXPECT_EQ(test, drm_dp_calc_pbn_mode(params->clock, params->bpp, params->dsc),
+	KUNIT_EXPECT_EQ(test, drm_dp_calc_pbn_mode(params->clock, params->bpp << 4),
 			params->expected);
 }
 
@@ -68,6 +68,152 @@ static void dp_mst_calc_pbn_mode_desc(const struct drm_dp_mst_calc_pbn_mode_test
 KUNIT_ARRAY_PARAM(drm_dp_mst_calc_pbn_mode, drm_dp_mst_calc_pbn_mode_cases,
 		  dp_mst_calc_pbn_mode_desc);
 
+struct drm_dp_mst_calc_pbn_div_test {
+	int link_rate;
+	int lane_count;
+	fixed20_12 expected;
+};
+
+#define fp_init(__int, __frac) { \
+	.full = (__int) * (1 << 12) + \
+		(__frac) * (1 << 12) / 100000 \
+}
+
+static const struct drm_dp_mst_calc_pbn_div_test drm_dp_mst_calc_pbn_div_dp1_4_cases[] = {
+	/*
+	 * UHBR rates (DP Standard v2.1 2.7.6.3, specifying the rounded to
+	 *             closest value to 2 decimal places):
+	 * .expected = .link_rate * .lane_count * 0.9671 / 8 / 54 / 100
+	 * DP1.4 rates (DP Standard v2.1 2.6.4.2):
+	 * .expected = .link_rate * .lane_count * 0.8000 / 8 / 54 / 100
+	 *
+	 * truncated to 5 decimal places.
+	 */
+	{
+		.link_rate = 2000000,
+		.lane_count = 4,
+		.expected = fp_init(179,  9259),  /* 179.09259 */
+	},
+	{
+		.link_rate = 2000000,
+		.lane_count = 2,
+		.expected = fp_init(89, 54629),
+	},
+	{
+		.link_rate = 2000000,
+		.lane_count = 1,
+		.expected = fp_init(44, 77314),
+	},
+	{
+		.link_rate = 1350000,
+		.lane_count = 4,
+		.expected = fp_init(120, 88750),
+	},
+	{
+		.link_rate = 1350000,
+		.lane_count = 2,
+		.expected = fp_init(60, 44375),
+	},
+	{
+		.link_rate = 1350000,
+		.lane_count = 1,
+		.expected = fp_init(30, 22187),
+	},
+	{
+		.link_rate = 1000000,
+		.lane_count = 4,
+		.expected = fp_init(89, 54629),
+	},
+	{
+		.link_rate = 1000000,
+		.lane_count = 2,
+		.expected = fp_init(44, 77314),
+	},
+	{
+		.link_rate = 1000000,
+		.lane_count = 1,
+		.expected = fp_init(22, 38657),
+	},
+	{
+		.link_rate = 810000,
+		.lane_count = 4,
+		.expected = fp_init(60, 0),
+	},
+	{
+		.link_rate = 810000,
+		.lane_count = 2,
+		.expected = fp_init(30, 0),
+	},
+	{
+		.link_rate = 810000,
+		.lane_count = 1,
+		.expected = fp_init(15, 0),
+	},
+	{
+		.link_rate = 540000,
+		.lane_count = 4,
+		.expected = fp_init(40, 0),
+	},
+	{
+		.link_rate = 540000,
+		.lane_count = 2,
+		.expected = fp_init(20, 0),
+	},
+	{
+		.link_rate = 540000,
+		.lane_count = 1,
+		.expected = fp_init(10, 0),
+	},
+	{
+		.link_rate = 270000,
+		.lane_count = 4,
+		.expected = fp_init(20, 0),
+	},
+	{
+		.link_rate = 270000,
+		.lane_count = 2,
+		.expected = fp_init(10, 0),
+	},
+	{
+		.link_rate = 270000,
+		.lane_count = 1,
+		.expected = fp_init(5, 0),
+	},
+	{
+		.link_rate = 162000,
+		.lane_count = 4,
+		.expected = fp_init(12, 0),
+	},
+	{
+		.link_rate = 162000,
+		.lane_count = 2,
+		.expected = fp_init(6, 0),
+	},
+	{
+		.link_rate = 162000,
+		.lane_count = 1,
+		.expected = fp_init(3, 0),
+	},
+};
+
+static void drm_test_dp_mst_calc_pbn_div(struct kunit *test)
+{
+	const struct drm_dp_mst_calc_pbn_div_test *params = test->param_value;
+	/* mgr->dev is only needed by drm_dbg_kms(), but it's not called for the test cases. */
+	struct drm_dp_mst_topology_mgr *mgr = test->priv;
+
+	KUNIT_EXPECT_EQ(test, drm_dp_get_vc_payload_bw(mgr, params->link_rate, params->lane_count).full,
+			params->expected.full);
+}
+
+static void dp_mst_calc_pbn_div_desc(const struct drm_dp_mst_calc_pbn_div_test *t, char *desc)
+{
+	sprintf(desc, "Link rate %d lane count %d", t->link_rate, t->lane_count);
+}
+
+KUNIT_ARRAY_PARAM(drm_dp_mst_calc_pbn_div, drm_dp_mst_calc_pbn_div_dp1_4_cases,
+		  dp_mst_calc_pbn_div_desc);
+
 static u8 data[] = { 0xff, 0x00, 0xdd };
 
 struct drm_dp_mst_sideband_msg_req_test {
@@ -416,13 +562,27 @@ KUNIT_ARRAY_PARAM(drm_dp_mst_sideband_msg_req, drm_dp_mst_sideband_msg_req_cases
 
 static struct kunit_case drm_dp_mst_helper_tests[] = {
 	KUNIT_CASE_PARAM(drm_test_dp_mst_calc_pbn_mode, drm_dp_mst_calc_pbn_mode_gen_params),
+	KUNIT_CASE_PARAM(drm_test_dp_mst_calc_pbn_div, drm_dp_mst_calc_pbn_div_gen_params),
 	KUNIT_CASE_PARAM(drm_test_dp_mst_sideband_msg_req_decode,
 			 drm_dp_mst_sideband_msg_req_gen_params),
 	{ }
 };
 
+static int drm_dp_mst_helper_tests_init(struct kunit *test)
+{
+	struct drm_dp_mst_topology_mgr *mgr;
+
+	mgr = kunit_kzalloc(test, sizeof(*mgr), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mgr);
+
+	test->priv = mgr;
+
+	return 0;
+}
+
 static struct kunit_suite drm_dp_mst_helper_test_suite = {
 	.name = "drm_dp_mst_helper",
+	.init = drm_dp_mst_helper_tests_init,
 	.test_cases = drm_dp_mst_helper_tests,
 };
 
diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/drm_exec_test.c
index 563949d777dd..81f928a429ba 100644
--- a/drivers/gpu/drm/tests/drm_exec_test.c
+++ b/drivers/gpu/drm/tests/drm_exec_test.c
@@ -46,7 +46,7 @@ static void sanitycheck(struct kunit *test)
 {
 	struct drm_exec exec;
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_fini(&exec);
 	KUNIT_SUCCEED(test);
 }
@@ -60,7 +60,7 @@ static void test_lock(struct kunit *test)
 
 	drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_until_all_locked(&exec) {
 		ret = drm_exec_lock_obj(&exec, &gobj);
 		drm_exec_retry_on_contention(&exec);
@@ -80,7 +80,7 @@ static void test_lock_unlock(struct kunit *test)
 
 	drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_until_all_locked(&exec) {
 		ret = drm_exec_lock_obj(&exec, &gobj);
 		drm_exec_retry_on_contention(&exec);
@@ -107,7 +107,7 @@ static void test_duplicates(struct kunit *test)
 
 	drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
 
-	drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES);
+	drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES, 0);
 	drm_exec_until_all_locked(&exec) {
 		ret = drm_exec_lock_obj(&exec, &gobj);
 		drm_exec_retry_on_contention(&exec);
@@ -134,7 +134,7 @@ static void test_prepare(struct kunit *test)
 
 	drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE);
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_until_all_locked(&exec) {
 		ret = drm_exec_prepare_obj(&exec, &gobj, 1);
 		drm_exec_retry_on_contention(&exec);
@@ -159,7 +159,7 @@ static void test_prepare_array(struct kunit *test)
 	drm_gem_private_object_init(priv->drm, &gobj1, PAGE_SIZE);
 	drm_gem_private_object_init(priv->drm, &gobj2, PAGE_SIZE);
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_until_all_locked(&exec)
 		ret = drm_exec_prepare_array(&exec, array, ARRAY_SIZE(array),
 					     1);
@@ -174,14 +174,14 @@ static void test_multiple_loops(struct kunit *test)
 {
 	struct drm_exec exec;
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_until_all_locked(&exec)
 	{
 		break;
 	}
 	drm_exec_fini(&exec);
 
-	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
 	drm_exec_until_all_locked(&exec)
 	{
 		break;
diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
index f6408e56f786..08992636ec05 100644
--- a/drivers/gpu/drm/tests/drm_format_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
@@ -20,6 +20,10 @@
 
 #define TEST_USE_DEFAULT_PITCH 0
 
+static unsigned char fmtcnv_state_mem[PAGE_SIZE];
+static struct drm_format_conv_state fmtcnv_state =
+	DRM_FORMAT_CONV_STATE_INIT_PREALLOCATED(fmtcnv_state_mem, sizeof(fmtcnv_state_mem));
+
 struct convert_to_gray8_result {
 	unsigned int dst_pitch;
 	const u8 expected[TEST_BUF_SIZE];
@@ -630,8 +634,7 @@ static void drm_test_fb_xrgb8888_to_gray8(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_gray8(&dst, dst_pitch, &src, &fb, &params->clip);
-
+	drm_fb_xrgb8888_to_gray8(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 }
 
@@ -664,7 +667,7 @@ static void drm_test_fb_xrgb8888_to_rgb332(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_rgb332(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_rgb332(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 }
 
@@ -697,12 +700,14 @@ static void drm_test_fb_xrgb8888_to_rgb565(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_rgb565(&dst, dst_pitch, &src, &fb, &params->clip, false);
+	drm_fb_xrgb8888_to_rgb565(&dst, dst_pitch, &src, &fb, &params->clip,
+				  &fmtcnv_state, false);
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
 	buf = dst.vaddr; /* restore original value of buf */
-	drm_fb_xrgb8888_to_rgb565(&dst, &result->dst_pitch, &src, &fb, &params->clip, true);
+	drm_fb_xrgb8888_to_rgb565(&dst, &result->dst_pitch, &src, &fb, &params->clip,
+				  &fmtcnv_state, true);
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected_swab, dst_size);
 
@@ -711,7 +716,8 @@ static void drm_test_fb_xrgb8888_to_rgb565(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_RGB565, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_RGB565, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 
@@ -748,7 +754,7 @@ static void drm_test_fb_xrgb8888_to_xrgb1555(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_xrgb1555(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_xrgb1555(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -757,7 +763,8 @@ static void drm_test_fb_xrgb8888_to_xrgb1555(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB1555, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB1555, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 
@@ -794,7 +801,7 @@ static void drm_test_fb_xrgb8888_to_argb1555(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_argb1555(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_argb1555(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -803,7 +810,8 @@ static void drm_test_fb_xrgb8888_to_argb1555(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ARGB1555, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ARGB1555, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 
@@ -840,7 +848,7 @@ static void drm_test_fb_xrgb8888_to_rgba5551(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_rgba5551(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_rgba5551(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -849,7 +857,8 @@ static void drm_test_fb_xrgb8888_to_rgba5551(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_RGBA5551, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_RGBA5551, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le16buf_to_cpu(test, (__force const __le16 *)buf, dst_size / sizeof(__le16));
 
@@ -890,7 +899,7 @@ static void drm_test_fb_xrgb8888_to_rgb888(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_rgb888(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_rgb888(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
 	buf = dst.vaddr; /* restore original value of buf */
@@ -898,7 +907,8 @@ static void drm_test_fb_xrgb8888_to_rgb888(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_RGB888, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_RGB888, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	KUNIT_EXPECT_FALSE(test, blit_result);
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
@@ -933,7 +943,7 @@ static void drm_test_fb_xrgb8888_to_argb8888(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_argb8888(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_argb8888(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -942,7 +952,8 @@ static void drm_test_fb_xrgb8888_to_argb8888(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ARGB8888, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ARGB8888, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
@@ -979,7 +990,7 @@ static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_xrgb2101010(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_xrgb2101010(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le32buf_to_cpu(test, buf, dst_size / sizeof(u32));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -989,7 +1000,7 @@ static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test)
 	int blit_result = 0;
 
 	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB2101010, &src, &fb,
-				  &params->clip);
+				  &params->clip, &fmtcnv_state);
 
 	KUNIT_EXPECT_FALSE(test, blit_result);
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
@@ -1024,7 +1035,7 @@ static void drm_test_fb_xrgb8888_to_argb2101010(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_argb2101010(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_argb2101010(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -1034,7 +1045,7 @@ static void drm_test_fb_xrgb8888_to_argb2101010(struct kunit *test)
 	int blit_result = 0;
 
 	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ARGB2101010, &src, &fb,
-				  &params->clip);
+				  &params->clip, &fmtcnv_state);
 
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
@@ -1071,7 +1082,7 @@ static void drm_test_fb_xrgb8888_to_mono(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_xrgb8888_to_mono(&dst, dst_pitch, &src, &fb, &params->clip);
+	drm_fb_xrgb8888_to_mono(&dst, dst_pitch, &src, &fb, &params->clip, &fmtcnv_state);
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 }
 
@@ -1104,7 +1115,7 @@ static void drm_test_fb_swab(struct kunit *test)
 	const unsigned int *dst_pitch = (result->dst_pitch == TEST_USE_DEFAULT_PITCH) ?
 		NULL : &result->dst_pitch;
 
-	drm_fb_swab(&dst, dst_pitch, &src, &fb, &params->clip, false);
+	drm_fb_swab(&dst, dst_pitch, &src, &fb, &params->clip, false, &fmtcnv_state);
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 	KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
 
@@ -1114,7 +1125,7 @@ static void drm_test_fb_swab(struct kunit *test)
 	int blit_result;
 
 	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB8888 | DRM_FORMAT_BIG_ENDIAN,
-				  &src, &fb, &params->clip);
+				  &src, &fb, &params->clip, &fmtcnv_state);
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
 	KUNIT_EXPECT_FALSE(test, blit_result);
@@ -1123,7 +1134,8 @@ static void drm_test_fb_swab(struct kunit *test)
 	buf = dst.vaddr;
 	memset(buf, 0, dst_size);
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_BGRX8888, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_BGRX8888, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
 	KUNIT_EXPECT_FALSE(test, blit_result);
@@ -1137,7 +1149,8 @@ static void drm_test_fb_swab(struct kunit *test)
 	mock_format.format |= DRM_FORMAT_BIG_ENDIAN;
 	fb.format = &mock_format;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB8888, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XRGB8888, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
 	KUNIT_EXPECT_FALSE(test, blit_result);
@@ -1175,7 +1188,8 @@ static void drm_test_fb_xrgb8888_to_abgr8888(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ABGR8888, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_ABGR8888, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
@@ -1214,7 +1228,8 @@ static void drm_test_fb_xrgb8888_to_xbgr8888(struct kunit *test)
 
 	int blit_result = 0;
 
-	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XBGR8888, &src, &fb, &params->clip);
+	blit_result = drm_fb_blit(&dst, dst_pitch, DRM_FORMAT_XBGR8888, &src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	buf = le32buf_to_cpu(test, (__force const __le32 *)buf, dst_size / sizeof(u32));
 
@@ -1817,7 +1832,8 @@ static void drm_test_fb_memcpy(struct kunit *test)
 
 	int blit_result;
 
-	blit_result = drm_fb_blit(dst, dst_pitches, params->format, src, &fb, &params->clip);
+	blit_result = drm_fb_blit(dst, dst_pitches, params->format, src, &fb, &params->clip,
+				  &fmtcnv_state);
 
 	KUNIT_EXPECT_FALSE(test, blit_result);
 	for (size_t i = 0; i < fb.format->num_planes; i++) {
diff --git a/drivers/gpu/drm/tests/drm_gem_shmem_test.c b/drivers/gpu/drm/tests/drm_gem_shmem_test.c
new file mode 100644
index 000000000000..91202e40cde9
--- /dev/null
+++ b/drivers/gpu/drm/tests/drm_gem_shmem_test.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * KUnit test suite for GEM objects backed by shmem buffers
+ *
+ * Copyright (C) 2023 Red Hat, Inc.
+ *
+ * Author: Marco Pagani <marpagan@redhat.com>
+ */
+
+#include <linux/dma-buf.h>
+#include <linux/iosys-map.h>
+#include <linux/sizes.h>
+
+#include <kunit/test.h>
+
+#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_kunit_helpers.h>
+
+#define TEST_SIZE		SZ_1M
+#define TEST_BYTE		0xae
+
+/*
+ * Wrappers to avoid an explicit type casting when passing action
+ * functions to kunit_add_action().
+ */
+static void kfree_wrapper(void *ptr)
+{
+	const void *obj = ptr;
+
+	kfree(obj);
+}
+
+static void sg_free_table_wrapper(void *ptr)
+{
+	struct sg_table *sgt = ptr;
+
+	sg_free_table(sgt);
+}
+
+static void drm_gem_shmem_free_wrapper(void *ptr)
+{
+	struct drm_gem_shmem_object *shmem = ptr;
+
+	drm_gem_shmem_free(shmem);
+}
+
+/*
+ * Test creating a shmem GEM object backed by shmem buffer. The test
+ * case succeeds if the GEM object is successfully allocated with the
+ * shmem file node and object functions attributes set, and the size
+ * attribute is equal to the correct size.
+ */
+static void drm_gem_shmem_test_obj_create(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+	KUNIT_EXPECT_EQ(test, shmem->base.size, TEST_SIZE);
+	KUNIT_EXPECT_NOT_NULL(test, shmem->base.filp);
+	KUNIT_EXPECT_NOT_NULL(test, shmem->base.funcs);
+
+	drm_gem_shmem_free(shmem);
+}
+
+/*
+ * Test creating a shmem GEM object from a scatter/gather table exported
+ * via a DMA-BUF. The test case succeed if the GEM object is successfully
+ * created with the shmem file node attribute equal to NULL and the sgt
+ * attribute pointing to the scatter/gather table that has been imported.
+ */
+static void drm_gem_shmem_test_obj_create_private(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	struct drm_gem_object *gem_obj;
+	struct dma_buf buf_mock;
+	struct dma_buf_attachment attach_mock;
+	struct sg_table *sgt;
+	char *buf;
+	int ret;
+
+	/* Create a mock scatter/gather table */
+	buf = kunit_kzalloc(test, TEST_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, buf);
+
+	sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, sgt);
+
+	ret = kunit_add_action_or_reset(test, kfree_wrapper, sgt);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = kunit_add_action_or_reset(test, sg_free_table_wrapper, sgt);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	sg_init_one(sgt->sgl, buf, TEST_SIZE);
+
+	/* Init a mock DMA-BUF */
+	buf_mock.size = TEST_SIZE;
+	attach_mock.dmabuf = &buf_mock;
+
+	gem_obj = drm_gem_shmem_prime_import_sg_table(drm_dev, &attach_mock, sgt);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gem_obj);
+	KUNIT_EXPECT_EQ(test, gem_obj->size, TEST_SIZE);
+	KUNIT_EXPECT_NULL(test, gem_obj->filp);
+	KUNIT_EXPECT_NOT_NULL(test, gem_obj->funcs);
+
+	/* The scatter/gather table will be freed by drm_gem_shmem_free */
+	kunit_remove_action(test, sg_free_table_wrapper, sgt);
+	kunit_remove_action(test, kfree_wrapper, sgt);
+
+	shmem = to_drm_gem_shmem_obj(gem_obj);
+	KUNIT_EXPECT_PTR_EQ(test, shmem->sgt, sgt);
+
+	drm_gem_shmem_free(shmem);
+}
+
+/*
+ * Test pinning backing pages for a shmem GEM object. The test case
+ * succeeds if a suitable number of backing pages are allocated, and
+ * the pages table counter attribute is increased by one.
+ */
+static void drm_gem_shmem_test_pin_pages(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	int i, ret;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+	KUNIT_EXPECT_NULL(test, shmem->pages);
+	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 0);
+
+	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = drm_gem_shmem_pin(shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+	KUNIT_ASSERT_NOT_NULL(test, shmem->pages);
+	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 1);
+
+	for (i = 0; i < (shmem->base.size >> PAGE_SHIFT); i++)
+		KUNIT_ASSERT_NOT_NULL(test, shmem->pages[i]);
+
+	drm_gem_shmem_unpin(shmem);
+	KUNIT_EXPECT_NULL(test, shmem->pages);
+	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 0);
+}
+
+/*
+ * Test creating a virtual mapping for a shmem GEM object. The test
+ * case succeeds if the backing memory is mapped and the reference
+ * counter for virtual mapping is increased by one. Moreover, the test
+ * case writes and then reads a test pattern over the mapped memory.
+ */
+static void drm_gem_shmem_test_vmap(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	struct iosys_map map;
+	int ret, i;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+	KUNIT_EXPECT_NULL(test, shmem->vaddr);
+	KUNIT_EXPECT_EQ(test, shmem->vmap_use_count, 0);
+
+	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = drm_gem_shmem_vmap(shmem, &map);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+	KUNIT_ASSERT_NOT_NULL(test, shmem->vaddr);
+	KUNIT_ASSERT_FALSE(test, iosys_map_is_null(&map));
+	KUNIT_EXPECT_EQ(test, shmem->vmap_use_count, 1);
+
+	iosys_map_memset(&map, 0, TEST_BYTE, TEST_SIZE);
+	for (i = 0; i < TEST_SIZE; i++)
+		KUNIT_EXPECT_EQ(test, iosys_map_rd(&map, i, u8), TEST_BYTE);
+
+	drm_gem_shmem_vunmap(shmem, &map);
+	KUNIT_EXPECT_NULL(test, shmem->vaddr);
+	KUNIT_EXPECT_EQ(test, shmem->vmap_use_count, 0);
+}
+
+/*
+ * Test exporting a scatter/gather table of pinned pages suitable for
+ * PRIME usage from a shmem GEM object. The test case succeeds if a
+ * scatter/gather table large enough to accommodate the backing memory
+ * is successfully exported.
+ */
+static void drm_gem_shmem_test_get_pages_sgt(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	struct sg_table *sgt;
+	struct scatterlist *sg;
+	unsigned int si, len = 0;
+	int ret;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+
+	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = drm_gem_shmem_pin(shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	sgt = drm_gem_shmem_get_sg_table(shmem);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt);
+	KUNIT_EXPECT_NULL(test, shmem->sgt);
+
+	ret = kunit_add_action_or_reset(test, sg_free_table_wrapper, sgt);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	for_each_sgtable_sg(sgt, sg, si) {
+		KUNIT_EXPECT_NOT_NULL(test, sg);
+		len += sg->length;
+	}
+
+	KUNIT_EXPECT_GE(test, len, TEST_SIZE);
+}
+
+/*
+ * Test pinning pages and exporting a scatter/gather table suitable for
+ * driver usage from a shmem GEM object. The test case succeeds if the
+ * backing pages are pinned and a scatter/gather table large enough to
+ * accommodate the backing memory is successfully exported.
+ */
+static void drm_gem_shmem_test_get_sg_table(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	struct sg_table *sgt;
+	struct scatterlist *sg;
+	unsigned int si, ret, len = 0;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+
+	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	/* The scatter/gather table will be freed by drm_gem_shmem_free */
+	sgt = drm_gem_shmem_get_pages_sgt(shmem);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt);
+	KUNIT_ASSERT_NOT_NULL(test, shmem->pages);
+	KUNIT_EXPECT_EQ(test, shmem->pages_use_count, 1);
+	KUNIT_EXPECT_PTR_EQ(test, sgt, shmem->sgt);
+
+	for_each_sgtable_sg(sgt, sg, si) {
+		KUNIT_EXPECT_NOT_NULL(test, sg);
+		len += sg->length;
+	}
+
+	KUNIT_EXPECT_GE(test, len, TEST_SIZE);
+}
+
+/*
+ * Test updating the madvise state of a shmem GEM object. The test
+ * case checks that the function for setting madv updates it only if
+ * its current value is greater or equal than zero and returns false
+ * if it has a negative value.
+ */
+static void drm_gem_shmem_test_madvise(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	int ret;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+	KUNIT_ASSERT_EQ(test, shmem->madv, 0);
+
+	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = drm_gem_shmem_madvise(shmem, 1);
+	KUNIT_EXPECT_TRUE(test, ret);
+	KUNIT_ASSERT_EQ(test, shmem->madv, 1);
+
+	/* Set madv to a negative value */
+	ret = drm_gem_shmem_madvise(shmem, -1);
+	KUNIT_EXPECT_FALSE(test, ret);
+	KUNIT_ASSERT_EQ(test, shmem->madv, -1);
+
+	/* Check that madv cannot be set back to a positive value */
+	ret = drm_gem_shmem_madvise(shmem, 0);
+	KUNIT_EXPECT_FALSE(test, ret);
+	KUNIT_ASSERT_EQ(test, shmem->madv, -1);
+}
+
+/*
+ * Test purging a shmem GEM object. First, assert that a newly created
+ * shmem GEM object is not purgeable. Then, set madvise to a positive
+ * value and call drm_gem_shmem_get_pages_sgt() to pin and dma-map the
+ * backing pages. Finally, assert that the shmem GEM object is now
+ * purgeable and purge it.
+ */
+static void drm_gem_shmem_test_purge(struct kunit *test)
+{
+	struct drm_device *drm_dev = test->priv;
+	struct drm_gem_shmem_object *shmem;
+	struct sg_table *sgt;
+	int ret;
+
+	shmem = drm_gem_shmem_create(drm_dev, TEST_SIZE);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, shmem);
+
+	ret = kunit_add_action_or_reset(test, drm_gem_shmem_free_wrapper, shmem);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	ret = drm_gem_shmem_is_purgeable(shmem);
+	KUNIT_EXPECT_FALSE(test, ret);
+
+	ret = drm_gem_shmem_madvise(shmem, 1);
+	KUNIT_EXPECT_TRUE(test, ret);
+
+	/* The scatter/gather table will be freed by drm_gem_shmem_free */
+	sgt = drm_gem_shmem_get_pages_sgt(shmem);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt);
+
+	ret = drm_gem_shmem_is_purgeable(shmem);
+	KUNIT_EXPECT_TRUE(test, ret);
+
+	drm_gem_shmem_purge(shmem);
+	KUNIT_EXPECT_NULL(test, shmem->pages);
+	KUNIT_EXPECT_NULL(test, shmem->sgt);
+	KUNIT_EXPECT_EQ(test, shmem->madv, -1);
+}
+
+static int drm_gem_shmem_test_init(struct kunit *test)
+{
+	struct device *dev;
+	struct drm_device *drm_dev;
+
+	/* Allocate a parent device */
+	dev = drm_kunit_helper_alloc_device(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
+
+	/*
+	 * The DRM core will automatically initialize the GEM core and create
+	 * a DRM Memory Manager object which provides an address space pool
+	 * for GEM objects allocation.
+	 */
+	drm_dev = __drm_kunit_helper_alloc_drm_device(test, dev, sizeof(*drm_dev),
+						      0, DRIVER_GEM);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, drm_dev);
+
+	test->priv = drm_dev;
+
+	return 0;
+}
+
+static struct kunit_case drm_gem_shmem_test_cases[] = {
+	KUNIT_CASE(drm_gem_shmem_test_obj_create),
+	KUNIT_CASE(drm_gem_shmem_test_obj_create_private),
+	KUNIT_CASE(drm_gem_shmem_test_pin_pages),
+	KUNIT_CASE(drm_gem_shmem_test_vmap),
+	KUNIT_CASE(drm_gem_shmem_test_get_pages_sgt),
+	KUNIT_CASE(drm_gem_shmem_test_get_sg_table),
+	KUNIT_CASE(drm_gem_shmem_test_madvise),
+	KUNIT_CASE(drm_gem_shmem_test_purge),
+	{}
+};
+
+static struct kunit_suite drm_gem_shmem_suite = {
+	.name = "drm_gem_shmem",
+	.init = drm_gem_shmem_test_init,
+	.test_cases = drm_gem_shmem_test_cases
+};
+
+kunit_test_suite(drm_gem_shmem_suite);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.c b/drivers/gpu/drm/tests/drm_kunit_helpers.c
index bccb33b900f3..ca4f8e4c5d5d 100644
--- a/drivers/gpu/drm/tests/drm_kunit_helpers.c
+++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c
@@ -5,6 +5,7 @@
 #include <drm/drm_kunit_helpers.h>
 #include <drm/drm_managed.h>
 
+#include <kunit/device.h>
 #include <kunit/resource.h>
 
 #include <linux/device.h>
@@ -15,40 +16,6 @@
 static const struct drm_mode_config_funcs drm_mode_config_funcs = {
 };
 
-static int fake_probe(struct platform_device *pdev)
-{
-	return 0;
-}
-
-static struct platform_driver fake_platform_driver = {
-	.probe	= fake_probe,
-	.driver = {
-		.name	= KUNIT_DEVICE_NAME,
-	},
-};
-
-static void kunit_action_platform_driver_unregister(void *ptr)
-{
-	struct platform_driver *drv = ptr;
-
-	platform_driver_unregister(drv);
-
-}
-
-static void kunit_action_platform_device_put(void *ptr)
-{
-	struct platform_device *pdev = ptr;
-
-	platform_device_put(pdev);
-}
-
-static void kunit_action_platform_device_del(void *ptr)
-{
-	struct platform_device *pdev = ptr;
-
-	platform_device_del(pdev);
-}
-
 /**
  * drm_kunit_helper_alloc_device - Allocate a mock device for a KUnit test
  * @test: The test context object
@@ -66,34 +33,7 @@ static void kunit_action_platform_device_del(void *ptr)
  */
 struct device *drm_kunit_helper_alloc_device(struct kunit *test)
 {
-	struct platform_device *pdev;
-	int ret;
-
-	ret = platform_driver_register(&fake_platform_driver);
-	KUNIT_ASSERT_EQ(test, ret, 0);
-
-	ret = kunit_add_action_or_reset(test,
-					kunit_action_platform_driver_unregister,
-					&fake_platform_driver);
-	KUNIT_ASSERT_EQ(test, ret, 0);
-
-	pdev = platform_device_alloc(KUNIT_DEVICE_NAME, PLATFORM_DEVID_NONE);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
-
-	ret = kunit_add_action_or_reset(test,
-					kunit_action_platform_device_put,
-					pdev);
-	KUNIT_ASSERT_EQ(test, ret, 0);
-
-	ret = platform_device_add(pdev);
-	KUNIT_ASSERT_EQ(test, ret, 0);
-
-	ret = kunit_add_action_or_reset(test,
-					kunit_action_platform_device_del,
-					pdev);
-	KUNIT_ASSERT_EQ(test, ret, 0);
-
-	return &pdev->dev;
+	return kunit_device_register(test, KUNIT_DEVICE_NAME);
 }
 EXPORT_SYMBOL_GPL(drm_kunit_helper_alloc_device);
 
@@ -106,19 +46,7 @@ EXPORT_SYMBOL_GPL(drm_kunit_helper_alloc_device);
  */
 void drm_kunit_helper_free_device(struct kunit *test, struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-
-	kunit_release_action(test,
-			     kunit_action_platform_device_del,
-			     pdev);
-
-	kunit_release_action(test,
-			     kunit_action_platform_device_put,
-			     pdev);
-
-	kunit_release_action(test,
-			     kunit_action_platform_driver_unregister,
-			     &fake_platform_driver);
+	kunit_device_unregister(test, dev);
 }
 EXPORT_SYMBOL_GPL(drm_kunit_helper_free_device);
 
diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c
index 6803cb2eb8fd..1eb0c304f960 100644
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -17,10 +17,6 @@
 
 #include "../lib/drm_random.h"
 
-static unsigned int random_seed;
-static unsigned int max_iterations = 8192;
-static unsigned int max_prime = 128;
-
 enum {
 	BEST,
 	BOTTOMUP,
@@ -37,10 +33,6 @@ static const struct insert_mode {
 	[TOPDOWN] = { "top-down", DRM_MM_INSERT_HIGH },
 	[EVICT] = { "evict", DRM_MM_INSERT_EVICT },
 	{}
-}, evict_modes[] = {
-	{ "bottom-up", DRM_MM_INSERT_LOW },
-	{ "top-down", DRM_MM_INSERT_HIGH },
-	{}
 };
 
 static bool assert_no_holes(struct kunit *test, const struct drm_mm *mm)
@@ -97,57 +89,6 @@ static bool assert_one_hole(struct kunit *test, const struct drm_mm *mm, u64 sta
 	return ok;
 }
 
-static bool assert_continuous(struct kunit *test, const struct drm_mm *mm, u64 size)
-{
-	struct drm_mm_node *node, *check, *found;
-	unsigned long n;
-	u64 addr;
-
-	if (!assert_no_holes(test, mm))
-		return false;
-
-	n = 0;
-	addr = 0;
-	drm_mm_for_each_node(node, mm) {
-		if (node->start != addr) {
-			KUNIT_FAIL(test, "node[%ld] list out of order, expected %llx found %llx\n",
-				   n, addr, node->start);
-			return false;
-		}
-
-		if (node->size != size) {
-			KUNIT_FAIL(test, "node[%ld].size incorrect, expected %llx, found %llx\n",
-				   n, size, node->size);
-			return false;
-		}
-
-		if (drm_mm_hole_follows(node)) {
-			KUNIT_FAIL(test, "node[%ld] is followed by a hole!\n", n);
-			return false;
-		}
-
-		found = NULL;
-		drm_mm_for_each_node_in_range(check, mm, addr, addr + size) {
-			if (node != check) {
-				KUNIT_FAIL(test,
-					   "lookup return wrong node, expected start %llx, found %llx\n",
-					   node->start, check->start);
-				return false;
-			}
-			found = check;
-		}
-		if (!found) {
-			KUNIT_FAIL(test, "lookup failed for node %llx + %llx\n", addr, size);
-			return false;
-		}
-
-		addr += size;
-		n++;
-	}
-
-	return true;
-}
-
 static u64 misalignment(struct drm_mm_node *node, u64 alignment)
 {
 	u64 rem;
@@ -273,215 +214,6 @@ static void drm_test_mm_debug(struct kunit *test)
 	KUNIT_SUCCEED(test);
 }
 
-static struct drm_mm_node *set_node(struct drm_mm_node *node,
-				    u64 start, u64 size)
-{
-	node->start = start;
-	node->size = size;
-	return node;
-}
-
-static bool expect_reserve_fail(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *node)
-{
-	int err;
-
-	err = drm_mm_reserve_node(mm, node);
-	if (likely(err == -ENOSPC))
-		return true;
-
-	if (!err) {
-		KUNIT_FAIL(test, "impossible reserve succeeded, node %llu + %llu\n",
-			   node->start, node->size);
-		drm_mm_remove_node(node);
-	} else {
-		KUNIT_FAIL(test,
-			   "impossible reserve failed with wrong error %d [expected %d], node %llu + %llu\n",
-		       err, -ENOSPC, node->start, node->size);
-	}
-	return false;
-}
-
-static bool noinline_for_stack check_reserve_boundaries(struct kunit *test, struct drm_mm *mm,
-							unsigned int count,
-							u64 size)
-{
-	const struct boundary {
-		u64 start, size;
-		const char *name;
-	} boundaries[] = {
-#define B(st, sz) { (st), (sz), "{ " #st ", " #sz "}" }
-		B(0, 0),
-		B(-size, 0),
-		B(size, 0),
-		B(size * count, 0),
-		B(-size, size),
-		B(-size, -size),
-		B(-size, 2 * size),
-		B(0, -size),
-		B(size, -size),
-		B(count * size, size),
-		B(count * size, -size),
-		B(count * size, count * size),
-		B(count * size, -count * size),
-		B(count * size, -(count + 1) * size),
-		B((count + 1) * size, size),
-		B((count + 1) * size, -size),
-		B((count + 1) * size, -2 * size),
-#undef B
-	};
-	struct drm_mm_node tmp = {};
-	int n;
-
-	for (n = 0; n < ARRAY_SIZE(boundaries); n++) {
-		if (!expect_reserve_fail(test, mm, set_node(&tmp, boundaries[n].start,
-							    boundaries[n].size))) {
-			KUNIT_FAIL(test, "boundary[%d:%s] failed, count=%u, size=%lld\n",
-				   n, boundaries[n].name, count, size);
-			return false;
-		}
-	}
-
-	return true;
-}
-
-static int __drm_test_mm_reserve(struct kunit *test, unsigned int count, u64 size)
-{
-	DRM_RND_STATE(prng, random_seed);
-	struct drm_mm mm;
-	struct drm_mm_node tmp, *nodes, *node, *next;
-	unsigned int *order, n, m, o = 0;
-	int ret, err;
-
-	/* For exercising drm_mm_reserve_node(), we want to check that
-	 * reservations outside of the drm_mm range are rejected, and to
-	 * overlapping and otherwise already occupied ranges. Afterwards,
-	 * the tree and nodes should be intact.
-	 */
-
-	DRM_MM_BUG_ON(!count);
-	DRM_MM_BUG_ON(!size);
-
-	ret = -ENOMEM;
-	order = drm_random_order(count, &prng);
-	if (!order)
-		goto err;
-
-	nodes = vzalloc(array_size(count, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	ret = -EINVAL;
-	drm_mm_init(&mm, 0, count * size);
-
-	if (!check_reserve_boundaries(test, &mm, count, size))
-		goto out;
-
-	for (n = 0; n < count; n++) {
-		nodes[n].start = order[n] * size;
-		nodes[n].size = size;
-
-		err = drm_mm_reserve_node(&mm, &nodes[n]);
-		if (err) {
-			KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n",
-				   n, nodes[n].start);
-			ret = err;
-			goto out;
-		}
-
-		if (!drm_mm_node_allocated(&nodes[n])) {
-			KUNIT_FAIL(test, "reserved node not allocated! step %d, start %llu\n",
-				   n, nodes[n].start);
-			goto out;
-		}
-
-		if (!expect_reserve_fail(test, &mm, &nodes[n]))
-			goto out;
-	}
-
-	/* After random insertion the nodes should be in order */
-	if (!assert_continuous(test, &mm, size))
-		goto out;
-
-	/* Repeated use should then fail */
-	drm_random_reorder(order, count, &prng);
-	for (n = 0; n < count; n++) {
-		if (!expect_reserve_fail(test, &mm, set_node(&tmp, order[n] * size, 1)))
-			goto out;
-
-		/* Remove and reinsert should work */
-		drm_mm_remove_node(&nodes[order[n]]);
-		err = drm_mm_reserve_node(&mm, &nodes[order[n]]);
-		if (err) {
-			KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n",
-				   n, nodes[n].start);
-			ret = err;
-			goto out;
-		}
-	}
-
-	if (!assert_continuous(test, &mm, size))
-		goto out;
-
-	/* Overlapping use should then fail */
-	for (n = 0; n < count; n++) {
-		if (!expect_reserve_fail(test, &mm, set_node(&tmp, 0, size * count)))
-			goto out;
-	}
-	for (n = 0; n < count; n++) {
-		if (!expect_reserve_fail(test, &mm, set_node(&tmp, size * n, size * (count - n))))
-			goto out;
-	}
-
-	/* Remove several, reinsert, check full */
-	for_each_prime_number(n, min(max_prime, count)) {
-		for (m = 0; m < n; m++) {
-			node = &nodes[order[(o + m) % count]];
-			drm_mm_remove_node(node);
-		}
-
-		for (m = 0; m < n; m++) {
-			node = &nodes[order[(o + m) % count]];
-			err = drm_mm_reserve_node(&mm, node);
-			if (err) {
-				KUNIT_FAIL(test, "reserve failed, step %d/%d, start %llu\n",
-					   m, n, node->start);
-				ret = err;
-				goto out;
-			}
-		}
-
-		o += n;
-
-		if (!assert_continuous(test, &mm, size))
-			goto out;
-	}
-
-	ret = 0;
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	vfree(nodes);
-	kfree(order);
-err:
-	return ret;
-}
-
-static void drm_test_mm_reserve(struct kunit *test)
-{
-	const unsigned int count = min_t(unsigned int, BIT(10), max_iterations);
-	int n;
-
-	for_each_prime_number_from(n, 1, 54) {
-		u64 size = BIT_ULL(n);
-
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size - 1));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size + 1));
-
-		cond_resched();
-	}
-}
-
 static bool expect_insert(struct kunit *test, struct drm_mm *mm,
 			  struct drm_mm_node *node, u64 size, u64 alignment, unsigned long color,
 			const struct insert_mode *mode)
@@ -506,600 +238,6 @@ static bool expect_insert(struct kunit *test, struct drm_mm *mm,
 	return true;
 }
 
-static bool expect_insert_fail(struct kunit *test, struct drm_mm *mm, u64 size)
-{
-	struct drm_mm_node tmp = {};
-	int err;
-
-	err = drm_mm_insert_node(mm, &tmp, size);
-	if (likely(err == -ENOSPC))
-		return true;
-
-	if (!err) {
-		KUNIT_FAIL(test, "impossible insert succeeded, node %llu + %llu\n",
-			   tmp.start, tmp.size);
-		drm_mm_remove_node(&tmp);
-	} else {
-		KUNIT_FAIL(test,
-			   "impossible insert failed with wrong error %d [expected %d], size %llu\n",
-			   err, -ENOSPC, size);
-	}
-	return false;
-}
-
-static int __drm_test_mm_insert(struct kunit *test, unsigned int count, u64 size, bool replace)
-{
-	DRM_RND_STATE(prng, random_seed);
-	const struct insert_mode *mode;
-	struct drm_mm mm;
-	struct drm_mm_node *nodes, *node, *next;
-	unsigned int *order, n, m, o = 0;
-	int ret;
-
-	/* Fill a range with lots of nodes, check it doesn't fail too early */
-
-	DRM_MM_BUG_ON(!count);
-	DRM_MM_BUG_ON(!size);
-
-	ret = -ENOMEM;
-	nodes = vmalloc(array_size(count, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	order = drm_random_order(count, &prng);
-	if (!order)
-		goto err_nodes;
-
-	ret = -EINVAL;
-	drm_mm_init(&mm, 0, count * size);
-
-	for (mode = insert_modes; mode->name; mode++) {
-		for (n = 0; n < count; n++) {
-			struct drm_mm_node tmp;
-
-			node = replace ? &tmp : &nodes[n];
-			memset(node, 0, sizeof(*node));
-			if (!expect_insert(test, &mm, node, size, 0, n, mode)) {
-				KUNIT_FAIL(test, "%s insert failed, size %llu step %d\n",
-					   mode->name, size, n);
-				goto out;
-			}
-
-			if (replace) {
-				drm_mm_replace_node(&tmp, &nodes[n]);
-				if (drm_mm_node_allocated(&tmp)) {
-					KUNIT_FAIL(test,
-						   "replaced old-node still allocated! step %d\n",
-						   n);
-					goto out;
-				}
-
-				if (!assert_node(test, &nodes[n], &mm, size, 0, n)) {
-					KUNIT_FAIL(test,
-						   "replaced node did not inherit parameters, size %llu step %d\n",
-						   size, n);
-					goto out;
-				}
-
-				if (tmp.start != nodes[n].start) {
-					KUNIT_FAIL(test,
-						   "replaced node mismatch location expected [%llx + %llx], found [%llx + %llx]\n",
-						   tmp.start, size, nodes[n].start, nodes[n].size);
-					goto out;
-				}
-			}
-		}
-
-		/* After random insertion the nodes should be in order */
-		if (!assert_continuous(test, &mm, size))
-			goto out;
-
-		/* Repeated use should then fail */
-		if (!expect_insert_fail(test, &mm, size))
-			goto out;
-
-		/* Remove one and reinsert, as the only hole it should refill itself */
-		for (n = 0; n < count; n++) {
-			u64 addr = nodes[n].start;
-
-			drm_mm_remove_node(&nodes[n]);
-			if (!expect_insert(test, &mm, &nodes[n], size, 0, n, mode)) {
-				KUNIT_FAIL(test, "%s reinsert failed, size %llu step %d\n",
-					   mode->name, size, n);
-				goto out;
-			}
-
-			if (nodes[n].start != addr) {
-				KUNIT_FAIL(test,
-					   "%s reinsert node moved, step %d, expected %llx, found %llx\n",
-					   mode->name, n, addr, nodes[n].start);
-				goto out;
-			}
-
-			if (!assert_continuous(test, &mm, size))
-				goto out;
-		}
-
-		/* Remove several, reinsert, check full */
-		for_each_prime_number(n, min(max_prime, count)) {
-			for (m = 0; m < n; m++) {
-				node = &nodes[order[(o + m) % count]];
-				drm_mm_remove_node(node);
-			}
-
-			for (m = 0; m < n; m++) {
-				node = &nodes[order[(o + m) % count]];
-				if (!expect_insert(test, &mm, node, size, 0, n, mode)) {
-					KUNIT_FAIL(test,
-						   "%s multiple reinsert failed, size %llu step %d\n",
-							   mode->name, size, n);
-					goto out;
-				}
-			}
-
-			o += n;
-
-			if (!assert_continuous(test, &mm, size))
-				goto out;
-
-			if (!expect_insert_fail(test, &mm, size))
-				goto out;
-		}
-
-		drm_mm_for_each_node_safe(node, next, &mm)
-			drm_mm_remove_node(node);
-		DRM_MM_BUG_ON(!drm_mm_clean(&mm));
-
-		cond_resched();
-	}
-
-	ret = 0;
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_nodes:
-	vfree(nodes);
-	return ret;
-}
-
-static void drm_test_mm_insert(struct kunit *test)
-{
-	const unsigned int count = min_t(unsigned int, BIT(10), max_iterations);
-	unsigned int n;
-
-	for_each_prime_number_from(n, 1, 54) {
-		u64 size = BIT_ULL(n);
-
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size - 1, false));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size, false));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size + 1, false));
-
-		cond_resched();
-	}
-}
-
-static void drm_test_mm_replace(struct kunit *test)
-{
-	const unsigned int count = min_t(unsigned int, BIT(10), max_iterations);
-	unsigned int n;
-
-	/* Reuse __drm_test_mm_insert to exercise replacement by inserting a dummy node,
-	 * then replacing it with the intended node. We want to check that
-	 * the tree is intact and all the information we need is carried
-	 * across to the target node.
-	 */
-
-	for_each_prime_number_from(n, 1, 54) {
-		u64 size = BIT_ULL(n);
-
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size - 1, true));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size, true));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size + 1, true));
-
-		cond_resched();
-	}
-}
-
-static bool expect_insert_in_range(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *node,
-				   u64 size, u64 alignment, unsigned long color,
-				   u64 range_start, u64 range_end, const struct insert_mode *mode)
-{
-	int err;
-
-	err = drm_mm_insert_node_in_range(mm, node,
-					  size, alignment, color,
-					  range_start, range_end,
-					  mode->mode);
-	if (err) {
-		KUNIT_FAIL(test,
-			   "insert (size=%llu, alignment=%llu, color=%lu, mode=%s) nto range [%llx, %llx] failed with err=%d\n",
-				   size, alignment, color, mode->name,
-				   range_start, range_end, err);
-		return false;
-	}
-
-	if (!assert_node(test, node, mm, size, alignment, color)) {
-		drm_mm_remove_node(node);
-		return false;
-	}
-
-	return true;
-}
-
-static bool expect_insert_in_range_fail(struct kunit *test, struct drm_mm *mm,
-					u64 size, u64 range_start, u64 range_end)
-{
-	struct drm_mm_node tmp = {};
-	int err;
-
-	err = drm_mm_insert_node_in_range(mm, &tmp, size, 0, 0, range_start, range_end,
-					  0);
-	if (likely(err == -ENOSPC))
-		return true;
-
-	if (!err) {
-		KUNIT_FAIL(test,
-			   "impossible insert succeeded, node %llx + %llu, range [%llx, %llx]\n",
-				   tmp.start, tmp.size, range_start, range_end);
-		drm_mm_remove_node(&tmp);
-	} else {
-		KUNIT_FAIL(test,
-			   "impossible insert failed with wrong error %d [expected %d], size %llu, range [%llx, %llx]\n",
-				   err, -ENOSPC, size, range_start, range_end);
-	}
-
-	return false;
-}
-
-static bool assert_contiguous_in_range(struct kunit *test, struct drm_mm *mm,
-				       u64 size, u64 start, u64 end)
-{
-	struct drm_mm_node *node;
-	unsigned int n;
-
-	if (!expect_insert_in_range_fail(test, mm, size, start, end))
-		return false;
-
-	n = div64_u64(start + size - 1, size);
-	drm_mm_for_each_node(node, mm) {
-		if (node->start < start || node->start + node->size > end) {
-			KUNIT_FAIL(test,
-				   "node %d out of range, address [%llx + %llu], range [%llx, %llx]\n",
-					   n, node->start, node->start + node->size, start, end);
-			return false;
-		}
-
-		if (node->start != n * size) {
-			KUNIT_FAIL(test, "node %d out of order, expected start %llx, found %llx\n",
-				   n, n * size, node->start);
-			return false;
-		}
-
-		if (node->size != size) {
-			KUNIT_FAIL(test, "node %d has wrong size, expected size %llx, found %llx\n",
-				   n, size, node->size);
-			return false;
-		}
-
-		if (drm_mm_hole_follows(node) && drm_mm_hole_node_end(node) < end) {
-			KUNIT_FAIL(test, "node %d is followed by a hole!\n", n);
-			return false;
-		}
-
-		n++;
-	}
-
-	if (start > 0) {
-		node = __drm_mm_interval_first(mm, 0, start - 1);
-		if (drm_mm_node_allocated(node)) {
-			KUNIT_FAIL(test, "node before start: node=%llx+%llu, start=%llx\n",
-				   node->start, node->size, start);
-			return false;
-		}
-	}
-
-	if (end < U64_MAX) {
-		node = __drm_mm_interval_first(mm, end, U64_MAX);
-		if (drm_mm_node_allocated(node)) {
-			KUNIT_FAIL(test, "node after end: node=%llx+%llu, end=%llx\n",
-				   node->start, node->size, end);
-			return false;
-		}
-	}
-
-	return true;
-}
-
-static int __drm_test_mm_insert_range(struct kunit *test, unsigned int count, u64 size,
-				      u64 start, u64 end)
-{
-	const struct insert_mode *mode;
-	struct drm_mm mm;
-	struct drm_mm_node *nodes, *node, *next;
-	unsigned int n, start_n, end_n;
-	int ret;
-
-	DRM_MM_BUG_ON(!count);
-	DRM_MM_BUG_ON(!size);
-	DRM_MM_BUG_ON(end <= start);
-
-	/* Very similar to __drm_test_mm_insert(), but now instead of populating the
-	 * full range of the drm_mm, we try to fill a small portion of it.
-	 */
-
-	ret = -ENOMEM;
-	nodes = vzalloc(array_size(count, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	ret = -EINVAL;
-	drm_mm_init(&mm, 0, count * size);
-
-	start_n = div64_u64(start + size - 1, size);
-	end_n = div64_u64(end - size, size);
-
-	for (mode = insert_modes; mode->name; mode++) {
-		for (n = start_n; n <= end_n; n++) {
-			if (!expect_insert_in_range(test, &mm, &nodes[n], size, size, n,
-						    start, end, mode)) {
-				KUNIT_FAIL(test,
-					   "%s insert failed, size %llu, step %d [%d, %d], range [%llx, %llx]\n",
-						   mode->name, size, n, start_n, end_n, start, end);
-				goto out;
-			}
-		}
-
-		if (!assert_contiguous_in_range(test, &mm, size, start, end)) {
-			KUNIT_FAIL(test,
-				   "%s: range [%llx, %llx] not full after initialisation, size=%llu\n",
-				   mode->name, start, end, size);
-			goto out;
-		}
-
-		/* Remove one and reinsert, it should refill itself */
-		for (n = start_n; n <= end_n; n++) {
-			u64 addr = nodes[n].start;
-
-			drm_mm_remove_node(&nodes[n]);
-			if (!expect_insert_in_range(test, &mm, &nodes[n], size, size, n,
-						    start, end, mode)) {
-				KUNIT_FAIL(test, "%s reinsert failed, step %d\n", mode->name, n);
-				goto out;
-			}
-
-			if (nodes[n].start != addr) {
-				KUNIT_FAIL(test,
-					   "%s reinsert node moved, step %d, expected %llx, found %llx\n",
-					   mode->name, n, addr, nodes[n].start);
-				goto out;
-			}
-		}
-
-		if (!assert_contiguous_in_range(test, &mm, size, start, end)) {
-			KUNIT_FAIL(test,
-				   "%s: range [%llx, %llx] not full after reinsertion, size=%llu\n",
-				   mode->name, start, end, size);
-			goto out;
-		}
-
-		drm_mm_for_each_node_safe(node, next, &mm)
-			drm_mm_remove_node(node);
-		DRM_MM_BUG_ON(!drm_mm_clean(&mm));
-
-		cond_resched();
-	}
-
-	ret = 0;
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	vfree(nodes);
-	return ret;
-}
-
-static int insert_outside_range(struct kunit *test)
-{
-	struct drm_mm mm;
-	const unsigned int start = 1024;
-	const unsigned int end = 2048;
-	const unsigned int size = end - start;
-
-	drm_mm_init(&mm, start, size);
-
-	if (!expect_insert_in_range_fail(test, &mm, 1, 0, start))
-		return -EINVAL;
-
-	if (!expect_insert_in_range_fail(test, &mm, size,
-					 start - size / 2, start + (size + 1) / 2))
-		return -EINVAL;
-
-	if (!expect_insert_in_range_fail(test, &mm, size,
-					 end - (size + 1) / 2, end + size / 2))
-		return -EINVAL;
-
-	if (!expect_insert_in_range_fail(test, &mm, 1, end, end + size))
-		return -EINVAL;
-
-	drm_mm_takedown(&mm);
-	return 0;
-}
-
-static void drm_test_mm_insert_range(struct kunit *test)
-{
-	const unsigned int count = min_t(unsigned int, BIT(13), max_iterations);
-	unsigned int n;
-
-	/* Check that requests outside the bounds of drm_mm are rejected. */
-	KUNIT_ASSERT_FALSE(test, insert_outside_range(test));
-
-	for_each_prime_number_from(n, 1, 50) {
-		const u64 size = BIT_ULL(n);
-		const u64 max = count * size;
-
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 1, max));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max - 1));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max / 2));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size,
-								    max / 2, max));
-		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size,
-								    max / 4 + 1, 3 * max / 4 - 1));
-
-		cond_resched();
-	}
-}
-
-static int prepare_frag(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *nodes,
-			unsigned int num_insert, const struct insert_mode *mode)
-{
-	unsigned int size = 4096;
-	unsigned int i;
-
-	for (i = 0; i < num_insert; i++) {
-		if (!expect_insert(test, mm, &nodes[i], size, 0, i, mode) != 0) {
-			KUNIT_FAIL(test, "%s insert failed\n", mode->name);
-			return -EINVAL;
-		}
-	}
-
-	/* introduce fragmentation by freeing every other node */
-	for (i = 0; i < num_insert; i++) {
-		if (i % 2 == 0)
-			drm_mm_remove_node(&nodes[i]);
-	}
-
-	return 0;
-}
-
-static u64 get_insert_time(struct kunit *test, struct drm_mm *mm,
-			   unsigned int num_insert, struct drm_mm_node *nodes,
-			   const struct insert_mode *mode)
-{
-	unsigned int size = 8192;
-	ktime_t start;
-	unsigned int i;
-
-	start = ktime_get();
-	for (i = 0; i < num_insert; i++) {
-		if (!expect_insert(test, mm, &nodes[i], size, 0, i, mode) != 0) {
-			KUNIT_FAIL(test, "%s insert failed\n", mode->name);
-			return 0;
-		}
-	}
-
-	return ktime_to_ns(ktime_sub(ktime_get(), start));
-}
-
-static void drm_test_mm_frag(struct kunit *test)
-{
-	struct drm_mm mm;
-	const struct insert_mode *mode;
-	struct drm_mm_node *nodes, *node, *next;
-	unsigned int insert_size = 10000;
-	unsigned int scale_factor = 4;
-
-	/* We need 4 * insert_size nodes to hold intermediate allocated
-	 * drm_mm nodes.
-	 * 1 times for prepare_frag()
-	 * 1 times for get_insert_time()
-	 * 2 times for get_insert_time()
-	 */
-	nodes = vzalloc(array_size(insert_size * 4, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	/* For BOTTOMUP and TOPDOWN, we first fragment the
-	 * address space using prepare_frag() and then try to verify
-	 * that insertions scale quadratically from 10k to 20k insertions
-	 */
-	drm_mm_init(&mm, 1, U64_MAX - 2);
-	for (mode = insert_modes; mode->name; mode++) {
-		u64 insert_time1, insert_time2;
-
-		if (mode->mode != DRM_MM_INSERT_LOW &&
-		    mode->mode != DRM_MM_INSERT_HIGH)
-			continue;
-
-		if (prepare_frag(test, &mm, nodes, insert_size, mode))
-			goto err;
-
-		insert_time1 = get_insert_time(test, &mm, insert_size,
-					       nodes + insert_size, mode);
-		if (insert_time1 == 0)
-			goto err;
-
-		insert_time2 = get_insert_time(test, &mm, (insert_size * 2),
-					       nodes + insert_size * 2, mode);
-		if (insert_time2 == 0)
-			goto err;
-
-		kunit_info(test, "%s fragmented insert of %u and %u insertions took %llu and %llu nsecs\n",
-			   mode->name, insert_size, insert_size * 2, insert_time1, insert_time2);
-
-		if (insert_time2 > (scale_factor * insert_time1)) {
-			KUNIT_FAIL(test, "%s fragmented insert took %llu nsecs more\n",
-				   mode->name, insert_time2 - (scale_factor * insert_time1));
-			goto err;
-		}
-
-		drm_mm_for_each_node_safe(node, next, &mm)
-			drm_mm_remove_node(node);
-	}
-
-err:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	vfree(nodes);
-}
-
-static void drm_test_mm_align(struct kunit *test)
-{
-	const struct insert_mode *mode;
-	const unsigned int max_count = min(8192u, max_prime);
-	struct drm_mm mm;
-	struct drm_mm_node *nodes, *node, *next;
-	unsigned int prime;
-
-	/* For each of the possible insertion modes, we pick a few
-	 * arbitrary alignments and check that the inserted node
-	 * meets our requirements.
-	 */
-
-	nodes = vzalloc(array_size(max_count, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	drm_mm_init(&mm, 1, U64_MAX - 2);
-
-	for (mode = insert_modes; mode->name; mode++) {
-		unsigned int i = 0;
-
-		for_each_prime_number_from(prime, 1, max_count) {
-			u64 size = next_prime_number(prime);
-
-			if (!expect_insert(test, &mm, &nodes[i], size, prime, i, mode)) {
-				KUNIT_FAIL(test, "%s insert failed with alignment=%d",
-					   mode->name, prime);
-				goto out;
-			}
-
-			i++;
-		}
-
-		drm_mm_for_each_node_safe(node, next, &mm)
-			drm_mm_remove_node(node);
-		DRM_MM_BUG_ON(!drm_mm_clean(&mm));
-
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	vfree(nodes);
-}
-
 static void drm_test_mm_align_pot(struct kunit *test, int max)
 {
 	struct drm_mm mm;
@@ -1147,626 +285,6 @@ static void drm_test_mm_align64(struct kunit *test)
 	drm_test_mm_align_pot(test, 64);
 }
 
-static void show_scan(struct kunit *test, const struct drm_mm_scan *scan)
-{
-	kunit_info(test, "scan: hit [%llx, %llx], size=%lld, align=%lld, color=%ld\n",
-		   scan->hit_start, scan->hit_end, scan->size, scan->alignment, scan->color);
-}
-
-static void show_holes(struct kunit *test, const struct drm_mm *mm, int count)
-{
-	u64 hole_start, hole_end;
-	struct drm_mm_node *hole;
-
-	drm_mm_for_each_hole(hole, mm, hole_start, hole_end) {
-		struct drm_mm_node *next = list_next_entry(hole, node_list);
-		const char *node1 = NULL, *node2 = NULL;
-
-		if (drm_mm_node_allocated(hole))
-			node1 = kasprintf(GFP_KERNEL, "[%llx + %lld, color=%ld], ",
-					  hole->start, hole->size, hole->color);
-
-		if (drm_mm_node_allocated(next))
-			node2 = kasprintf(GFP_KERNEL, ", [%llx + %lld, color=%ld]",
-					  next->start, next->size, next->color);
-
-		kunit_info(test, "%sHole [%llx - %llx, size %lld]%s\n", node1,
-			   hole_start, hole_end, hole_end - hole_start, node2);
-
-		kfree(node2);
-		kfree(node1);
-
-		if (!--count)
-			break;
-	}
-}
-
-struct evict_node {
-	struct drm_mm_node node;
-	struct list_head link;
-};
-
-static bool evict_nodes(struct kunit *test, struct drm_mm_scan *scan,
-			struct evict_node *nodes, unsigned int *order, unsigned int count,
-			bool use_color, struct list_head *evict_list)
-{
-	struct evict_node *e, *en;
-	unsigned int i;
-
-	for (i = 0; i < count; i++) {
-		e = &nodes[order ? order[i] : i];
-		list_add(&e->link, evict_list);
-		if (drm_mm_scan_add_block(scan, &e->node))
-			break;
-	}
-	list_for_each_entry_safe(e, en, evict_list, link) {
-		if (!drm_mm_scan_remove_block(scan, &e->node))
-			list_del(&e->link);
-	}
-	if (list_empty(evict_list)) {
-		KUNIT_FAIL(test,
-			   "Failed to find eviction: size=%lld [avail=%d], align=%lld (color=%lu)\n",
-			   scan->size, count, scan->alignment, scan->color);
-		return false;
-	}
-
-	list_for_each_entry(e, evict_list, link)
-		drm_mm_remove_node(&e->node);
-
-	if (use_color) {
-		struct drm_mm_node *node;
-
-		while ((node = drm_mm_scan_color_evict(scan))) {
-			e = container_of(node, typeof(*e), node);
-			drm_mm_remove_node(&e->node);
-			list_add(&e->link, evict_list);
-		}
-	} else {
-		if (drm_mm_scan_color_evict(scan)) {
-			KUNIT_FAIL(test,
-				   "drm_mm_scan_color_evict unexpectedly reported overlapping nodes!\n");
-			return false;
-		}
-	}
-
-	return true;
-}
-
-static bool evict_nothing(struct kunit *test, struct drm_mm *mm,
-			  unsigned int total_size, struct evict_node *nodes)
-{
-	struct drm_mm_scan scan;
-	LIST_HEAD(evict_list);
-	struct evict_node *e;
-	struct drm_mm_node *node;
-	unsigned int n;
-
-	drm_mm_scan_init(&scan, mm, 1, 0, 0, 0);
-	for (n = 0; n < total_size; n++) {
-		e = &nodes[n];
-		list_add(&e->link, &evict_list);
-		drm_mm_scan_add_block(&scan, &e->node);
-	}
-	list_for_each_entry(e, &evict_list, link)
-		drm_mm_scan_remove_block(&scan, &e->node);
-
-	for (n = 0; n < total_size; n++) {
-		e = &nodes[n];
-
-		if (!drm_mm_node_allocated(&e->node)) {
-			KUNIT_FAIL(test, "node[%d] no longer allocated!\n", n);
-			return false;
-		}
-
-		e->link.next = NULL;
-	}
-
-	drm_mm_for_each_node(node, mm) {
-		e = container_of(node, typeof(*e), node);
-		e->link.next = &e->link;
-	}
-
-	for (n = 0; n < total_size; n++) {
-		e = &nodes[n];
-
-		if (!e->link.next) {
-			KUNIT_FAIL(test, "node[%d] no longer connected!\n", n);
-			return false;
-		}
-	}
-
-	return assert_continuous(test, mm, nodes[0].node.size);
-}
-
-static bool evict_everything(struct kunit *test, struct drm_mm *mm,
-			     unsigned int total_size, struct evict_node *nodes)
-{
-	struct drm_mm_scan scan;
-	LIST_HEAD(evict_list);
-	struct evict_node *e;
-	unsigned int n;
-	int err;
-
-	drm_mm_scan_init(&scan, mm, total_size, 0, 0, 0);
-	for (n = 0; n < total_size; n++) {
-		e = &nodes[n];
-		list_add(&e->link, &evict_list);
-		if (drm_mm_scan_add_block(&scan, &e->node))
-			break;
-	}
-
-	err = 0;
-	list_for_each_entry(e, &evict_list, link) {
-		if (!drm_mm_scan_remove_block(&scan, &e->node)) {
-			if (!err) {
-				KUNIT_FAIL(test, "Node %lld not marked for eviction!\n",
-					   e->node.start);
-				err = -EINVAL;
-			}
-		}
-	}
-	if (err)
-		return false;
-
-	list_for_each_entry(e, &evict_list, link)
-		drm_mm_remove_node(&e->node);
-
-	if (!assert_one_hole(test, mm, 0, total_size))
-		return false;
-
-	list_for_each_entry(e, &evict_list, link) {
-		err = drm_mm_reserve_node(mm, &e->node);
-		if (err) {
-			KUNIT_FAIL(test, "Failed to reinsert node after eviction: start=%llx\n",
-				   e->node.start);
-			return false;
-		}
-	}
-
-	return assert_continuous(test, mm, nodes[0].node.size);
-}
-
-static int evict_something(struct kunit *test, struct drm_mm *mm,
-			   u64 range_start, u64 range_end, struct evict_node *nodes,
-			   unsigned int *order, unsigned int count, unsigned int size,
-			   unsigned int alignment, const struct insert_mode *mode)
-{
-	struct drm_mm_scan scan;
-	LIST_HEAD(evict_list);
-	struct evict_node *e;
-	struct drm_mm_node tmp;
-	int err;
-
-	drm_mm_scan_init_with_range(&scan, mm, size, alignment, 0, range_start,
-				    range_end, mode->mode);
-	if (!evict_nodes(test, &scan, nodes, order, count, false, &evict_list))
-		return -EINVAL;
-
-	memset(&tmp, 0, sizeof(tmp));
-	err = drm_mm_insert_node_generic(mm, &tmp, size, alignment, 0,
-					 DRM_MM_INSERT_EVICT);
-	if (err) {
-		KUNIT_FAIL(test, "Failed to insert into eviction hole: size=%d, align=%d\n",
-			   size, alignment);
-		show_scan(test, &scan);
-		show_holes(test, mm, 3);
-		return err;
-	}
-
-	if (tmp.start < range_start || tmp.start + tmp.size > range_end) {
-		KUNIT_FAIL(test,
-			   "Inserted [address=%llu + %llu] did not fit into the request range [%llu, %llu]\n",
-			   tmp.start, tmp.size, range_start, range_end);
-		err = -EINVAL;
-	}
-
-	if (!assert_node(test, &tmp, mm, size, alignment, 0) ||
-	    drm_mm_hole_follows(&tmp)) {
-		KUNIT_FAIL(test,
-			   "Inserted did not fill the eviction hole: size=%lld [%d], align=%d [rem=%lld], start=%llx, hole-follows?=%d\n",
-			   tmp.size, size, alignment, misalignment(&tmp, alignment),
-			   tmp.start, drm_mm_hole_follows(&tmp));
-		err = -EINVAL;
-	}
-
-	drm_mm_remove_node(&tmp);
-	if (err)
-		return err;
-
-	list_for_each_entry(e, &evict_list, link) {
-		err = drm_mm_reserve_node(mm, &e->node);
-		if (err) {
-			KUNIT_FAIL(test, "Failed to reinsert node after eviction: start=%llx\n",
-				   e->node.start);
-			return err;
-		}
-	}
-
-	if (!assert_continuous(test, mm, nodes[0].node.size)) {
-		KUNIT_FAIL(test, "range is no longer continuous\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void drm_test_mm_evict(struct kunit *test)
-{
-	DRM_RND_STATE(prng, random_seed);
-	const unsigned int size = 8192;
-	const struct insert_mode *mode;
-	struct drm_mm mm;
-	struct evict_node *nodes;
-	struct drm_mm_node *node, *next;
-	unsigned int *order, n;
-
-	/* Here we populate a full drm_mm and then try and insert a new node
-	 * by evicting other nodes in a random order. The drm_mm_scan should
-	 * pick the first matching hole it finds from the random list. We
-	 * repeat that for different allocation strategies, alignments and
-	 * sizes to try and stress the hole finder.
-	 */
-
-	nodes = vzalloc(array_size(size, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	order = drm_random_order(size, &prng);
-	if (!order)
-		goto err_nodes;
-
-	drm_mm_init(&mm, 0, size);
-	for (n = 0; n < size; n++) {
-		if (drm_mm_insert_node(&mm, &nodes[n].node, 1)) {
-			KUNIT_FAIL(test, "insert failed, step %d\n", n);
-			goto out;
-		}
-	}
-
-	/* First check that using the scanner doesn't break the mm */
-	if (!evict_nothing(test, &mm, size, nodes)) {
-		KUNIT_FAIL(test, "evict_nothing() failed\n");
-		goto out;
-	}
-	if (!evict_everything(test, &mm, size, nodes)) {
-		KUNIT_FAIL(test, "evict_everything() failed\n");
-		goto out;
-	}
-
-	for (mode = evict_modes; mode->name; mode++) {
-		for (n = 1; n <= size; n <<= 1) {
-			drm_random_reorder(order, size, &prng);
-			if (evict_something(test, &mm, 0, U64_MAX, nodes, order, size, n, 1,
-					    mode)) {
-				KUNIT_FAIL(test, "%s evict_something(size=%u) failed\n",
-					   mode->name, n);
-				goto out;
-			}
-		}
-
-		for (n = 1; n < size; n <<= 1) {
-			drm_random_reorder(order, size, &prng);
-			if (evict_something(test, &mm, 0, U64_MAX, nodes, order, size,
-					    size / 2, n, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_something(size=%u, alignment=%u) failed\n",
-					   mode->name, size / 2, n);
-				goto out;
-			}
-		}
-
-		for_each_prime_number_from(n, 1, min(size, max_prime)) {
-			unsigned int nsize = (size - n + 1) / 2;
-
-			DRM_MM_BUG_ON(!nsize);
-
-			drm_random_reorder(order, size, &prng);
-			if (evict_something(test, &mm, 0, U64_MAX, nodes, order, size,
-					    nsize, n, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_something(size=%u, alignment=%u) failed\n",
-					   mode->name, nsize, n);
-				goto out;
-			}
-		}
-
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_nodes:
-	vfree(nodes);
-}
-
-static void drm_test_mm_evict_range(struct kunit *test)
-{
-	DRM_RND_STATE(prng, random_seed);
-	const unsigned int size = 8192;
-	const unsigned int range_size = size / 2;
-	const unsigned int range_start = size / 4;
-	const unsigned int range_end = range_start + range_size;
-	const struct insert_mode *mode;
-	struct drm_mm mm;
-	struct evict_node *nodes;
-	struct drm_mm_node *node, *next;
-	unsigned int *order, n;
-
-	/* Like drm_test_mm_evict() but now we are limiting the search to a
-	 * small portion of the full drm_mm.
-	 */
-
-	nodes = vzalloc(array_size(size, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	order = drm_random_order(size, &prng);
-	if (!order)
-		goto err_nodes;
-
-	drm_mm_init(&mm, 0, size);
-	for (n = 0; n < size; n++) {
-		if (drm_mm_insert_node(&mm, &nodes[n].node, 1)) {
-			KUNIT_FAIL(test, "insert failed, step %d\n", n);
-			goto out;
-		}
-	}
-
-	for (mode = evict_modes; mode->name; mode++) {
-		for (n = 1; n <= range_size; n <<= 1) {
-			drm_random_reorder(order, size, &prng);
-			if (evict_something(test, &mm, range_start, range_end, nodes,
-					    order, size, n, 1, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_something(size=%u) failed with range [%u, %u]\n",
-					   mode->name, n, range_start, range_end);
-				goto out;
-			}
-		}
-
-		for (n = 1; n <= range_size; n <<= 1) {
-			drm_random_reorder(order, size, &prng);
-			if (evict_something(test, &mm, range_start, range_end, nodes,
-					    order, size, range_size / 2, n, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_something(size=%u, alignment=%u) failed with range [%u, %u]\n",
-					   mode->name, range_size / 2, n, range_start, range_end);
-				goto out;
-			}
-		}
-
-		for_each_prime_number_from(n, 1, min(range_size, max_prime)) {
-			unsigned int nsize = (range_size - n + 1) / 2;
-
-			DRM_MM_BUG_ON(!nsize);
-
-			drm_random_reorder(order, size, &prng);
-			if (evict_something(test, &mm, range_start, range_end, nodes,
-					    order, size, nsize, n, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_something(size=%u, alignment=%u) failed with range [%u, %u]\n",
-					   mode->name, nsize, n, range_start, range_end);
-				goto out;
-			}
-		}
-
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_nodes:
-	vfree(nodes);
-}
-
-static unsigned int node_index(const struct drm_mm_node *node)
-{
-	return div64_u64(node->start, node->size);
-}
-
-static void drm_test_mm_topdown(struct kunit *test)
-{
-	const struct insert_mode *topdown = &insert_modes[TOPDOWN];
-
-	DRM_RND_STATE(prng, random_seed);
-	const unsigned int count = 8192;
-	unsigned int size;
-	unsigned long *bitmap;
-	struct drm_mm mm;
-	struct drm_mm_node *nodes, *node, *next;
-	unsigned int *order, n, m, o = 0;
-
-	/* When allocating top-down, we expect to be returned a node
-	 * from a suitable hole at the top of the drm_mm. We check that
-	 * the returned node does match the highest available slot.
-	 */
-
-	nodes = vzalloc(array_size(count, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	bitmap = bitmap_zalloc(count, GFP_KERNEL);
-	if (!bitmap)
-		goto err_nodes;
-
-	order = drm_random_order(count, &prng);
-	if (!order)
-		goto err_bitmap;
-
-	for (size = 1; size <= 64; size <<= 1) {
-		drm_mm_init(&mm, 0, size * count);
-		for (n = 0; n < count; n++) {
-			if (!expect_insert(test, &mm, &nodes[n], size, 0, n, topdown)) {
-				KUNIT_FAIL(test, "insert failed, size %u step %d\n", size, n);
-				goto out;
-			}
-
-			if (drm_mm_hole_follows(&nodes[n])) {
-				KUNIT_FAIL(test,
-					   "hole after topdown insert %d, start=%llx\n, size=%u",
-					   n, nodes[n].start, size);
-				goto out;
-			}
-
-			if (!assert_one_hole(test, &mm, 0, size * (count - n - 1)))
-				goto out;
-		}
-
-		if (!assert_continuous(test, &mm, size))
-			goto out;
-
-		drm_random_reorder(order, count, &prng);
-		for_each_prime_number_from(n, 1, min(count, max_prime)) {
-			for (m = 0; m < n; m++) {
-				node = &nodes[order[(o + m) % count]];
-				drm_mm_remove_node(node);
-				__set_bit(node_index(node), bitmap);
-			}
-
-			for (m = 0; m < n; m++) {
-				unsigned int last;
-
-				node = &nodes[order[(o + m) % count]];
-				if (!expect_insert(test, &mm, node, size, 0, 0, topdown)) {
-					KUNIT_FAIL(test, "insert failed, step %d/%d\n", m, n);
-					goto out;
-				}
-
-				if (drm_mm_hole_follows(node)) {
-					KUNIT_FAIL(test,
-						   "hole after topdown insert %d/%d, start=%llx\n",
-						   m, n, node->start);
-					goto out;
-				}
-
-				last = find_last_bit(bitmap, count);
-				if (node_index(node) != last) {
-					KUNIT_FAIL(test,
-						   "node %d/%d, size %d, not inserted into upmost hole, expected %d, found %d\n",
-						   m, n, size, last, node_index(node));
-					goto out;
-				}
-
-				__clear_bit(last, bitmap);
-			}
-
-			DRM_MM_BUG_ON(find_first_bit(bitmap, count) != count);
-
-			o += n;
-		}
-
-		drm_mm_for_each_node_safe(node, next, &mm)
-			drm_mm_remove_node(node);
-		DRM_MM_BUG_ON(!drm_mm_clean(&mm));
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_bitmap:
-	bitmap_free(bitmap);
-err_nodes:
-	vfree(nodes);
-}
-
-static void drm_test_mm_bottomup(struct kunit *test)
-{
-	const struct insert_mode *bottomup = &insert_modes[BOTTOMUP];
-
-	DRM_RND_STATE(prng, random_seed);
-	const unsigned int count = 8192;
-	unsigned int size;
-	unsigned long *bitmap;
-	struct drm_mm mm;
-	struct drm_mm_node *nodes, *node, *next;
-	unsigned int *order, n, m, o = 0;
-
-	/* Like drm_test_mm_topdown, but instead of searching for the last hole,
-	 * we search for the first.
-	 */
-
-	nodes = vzalloc(array_size(count, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	bitmap = bitmap_zalloc(count, GFP_KERNEL);
-	if (!bitmap)
-		goto err_nodes;
-
-	order = drm_random_order(count, &prng);
-	if (!order)
-		goto err_bitmap;
-
-	for (size = 1; size <= 64; size <<= 1) {
-		drm_mm_init(&mm, 0, size * count);
-		for (n = 0; n < count; n++) {
-			if (!expect_insert(test, &mm, &nodes[n], size, 0, n, bottomup)) {
-				KUNIT_FAIL(test,
-					   "bottomup insert failed, size %u step %d\n", size, n);
-				goto out;
-			}
-
-			if (!assert_one_hole(test, &mm, size * (n + 1), size * count))
-				goto out;
-		}
-
-		if (!assert_continuous(test, &mm, size))
-			goto out;
-
-		drm_random_reorder(order, count, &prng);
-		for_each_prime_number_from(n, 1, min(count, max_prime)) {
-			for (m = 0; m < n; m++) {
-				node = &nodes[order[(o + m) % count]];
-				drm_mm_remove_node(node);
-				__set_bit(node_index(node), bitmap);
-			}
-
-			for (m = 0; m < n; m++) {
-				unsigned int first;
-
-				node = &nodes[order[(o + m) % count]];
-				if (!expect_insert(test, &mm, node, size, 0, 0, bottomup)) {
-					KUNIT_FAIL(test, "insert failed, step %d/%d\n", m, n);
-					goto out;
-				}
-
-				first = find_first_bit(bitmap, count);
-				if (node_index(node) != first) {
-					KUNIT_FAIL(test,
-						   "node %d/%d not inserted into bottom hole, expected %d, found %d\n",
-						   m, n, first, node_index(node));
-					goto out;
-				}
-				__clear_bit(first, bitmap);
-			}
-
-			DRM_MM_BUG_ON(find_first_bit(bitmap, count) != count);
-
-			o += n;
-		}
-
-		drm_mm_for_each_node_safe(node, next, &mm)
-			drm_mm_remove_node(node);
-		DRM_MM_BUG_ON(!drm_mm_clean(&mm));
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_bitmap:
-	bitmap_free(bitmap);
-err_nodes:
-	vfree(nodes);
-}
-
 static void drm_test_mm_once(struct kunit *test, unsigned int mode)
 {
 	struct drm_mm mm;
@@ -1820,440 +338,18 @@ static void drm_test_mm_highest(struct kunit *test)
 	drm_test_mm_once(test, DRM_MM_INSERT_HIGH);
 }
 
-static void separate_adjacent_colors(const struct drm_mm_node *node,
-				     unsigned long color, u64 *start, u64 *end)
-{
-	if (drm_mm_node_allocated(node) && node->color != color)
-		++*start;
-
-	node = list_next_entry(node, node_list);
-	if (drm_mm_node_allocated(node) && node->color != color)
-		--*end;
-}
-
-static bool colors_abutt(struct kunit *test, const struct drm_mm_node *node)
-{
-	if (!drm_mm_hole_follows(node) &&
-	    drm_mm_node_allocated(list_next_entry(node, node_list))) {
-		KUNIT_FAIL(test, "colors abutt; %ld [%llx + %llx] is next to %ld [%llx + %llx]!\n",
-			   node->color, node->start, node->size,
-		       list_next_entry(node, node_list)->color,
-		       list_next_entry(node, node_list)->start,
-		       list_next_entry(node, node_list)->size);
-		return true;
-	}
-
-	return false;
-}
-
-static void drm_test_mm_color(struct kunit *test)
-{
-	const unsigned int count = min(4096u, max_iterations);
-	const struct insert_mode *mode;
-	struct drm_mm mm;
-	struct drm_mm_node *node, *nn;
-	unsigned int n;
-
-	/* Color adjustment complicates everything. First we just check
-	 * that when we insert a node we apply any color_adjustment callback.
-	 * The callback we use should ensure that there is a gap between
-	 * any two nodes, and so after each insertion we check that those
-	 * holes are inserted and that they are preserved.
-	 */
-
-	drm_mm_init(&mm, 0, U64_MAX);
-
-	for (n = 1; n <= count; n++) {
-		node = kzalloc(sizeof(*node), GFP_KERNEL);
-		if (!node)
-			goto out;
-
-		if (!expect_insert(test, &mm, node, n, 0, n, &insert_modes[0])) {
-			KUNIT_FAIL(test, "insert failed, step %d\n", n);
-			kfree(node);
-			goto out;
-		}
-	}
-
-	drm_mm_for_each_node_safe(node, nn, &mm) {
-		if (node->color != node->size) {
-			KUNIT_FAIL(test, "invalid color stored: expected %lld, found %ld\n",
-				   node->size, node->color);
-
-			goto out;
-		}
-
-		drm_mm_remove_node(node);
-		kfree(node);
-	}
-
-	/* Now, let's start experimenting with applying a color callback */
-	mm.color_adjust = separate_adjacent_colors;
-	for (mode = insert_modes; mode->name; mode++) {
-		u64 last;
-
-		node = kzalloc(sizeof(*node), GFP_KERNEL);
-		if (!node)
-			goto out;
-
-		node->size = 1 + 2 * count;
-		node->color = node->size;
-
-		if (drm_mm_reserve_node(&mm, node)) {
-			KUNIT_FAIL(test, "initial reserve failed!\n");
-			goto out;
-		}
-
-		last = node->start + node->size;
-
-		for (n = 1; n <= count; n++) {
-			int rem;
-
-			node = kzalloc(sizeof(*node), GFP_KERNEL);
-			if (!node)
-				goto out;
-
-			node->start = last;
-			node->size = n + count;
-			node->color = node->size;
-
-			if (drm_mm_reserve_node(&mm, node) != -ENOSPC) {
-				KUNIT_FAIL(test, "reserve %d did not report color overlap!", n);
-				goto out;
-			}
-
-			node->start += n + 1;
-			rem = misalignment(node, n + count);
-			node->start += n + count - rem;
-
-			if (drm_mm_reserve_node(&mm, node)) {
-				KUNIT_FAIL(test, "reserve %d failed", n);
-				goto out;
-			}
-
-			last = node->start + node->size;
-		}
-
-		for (n = 1; n <= count; n++) {
-			node = kzalloc(sizeof(*node), GFP_KERNEL);
-			if (!node)
-				goto out;
-
-			if (!expect_insert(test, &mm, node, n, n, n, mode)) {
-				KUNIT_FAIL(test, "%s insert failed, step %d\n", mode->name, n);
-				kfree(node);
-				goto out;
-			}
-		}
-
-		drm_mm_for_each_node_safe(node, nn, &mm) {
-			u64 rem;
-
-			if (node->color != node->size) {
-				KUNIT_FAIL(test,
-					   "%s invalid color stored: expected %lld, found %ld\n",
-					   mode->name, node->size, node->color);
-
-				goto out;
-			}
-
-			if (colors_abutt(test, node))
-				goto out;
-
-			div64_u64_rem(node->start, node->size, &rem);
-			if (rem) {
-				KUNIT_FAIL(test,
-					   "%s colored node misaligned, start=%llx expected alignment=%lld [rem=%lld]\n",
-					   mode->name, node->start, node->size, rem);
-				goto out;
-			}
-
-			drm_mm_remove_node(node);
-			kfree(node);
-		}
-
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, nn, &mm) {
-		drm_mm_remove_node(node);
-		kfree(node);
-	}
-	drm_mm_takedown(&mm);
-}
-
-static int evict_color(struct kunit *test, struct drm_mm *mm, u64 range_start,
-		       u64 range_end, struct evict_node *nodes, unsigned int *order,
-		unsigned int count, unsigned int size, unsigned int alignment,
-		unsigned long color, const struct insert_mode *mode)
-{
-	struct drm_mm_scan scan;
-	LIST_HEAD(evict_list);
-	struct evict_node *e;
-	struct drm_mm_node tmp;
-	int err;
-
-	drm_mm_scan_init_with_range(&scan, mm, size, alignment, color, range_start,
-				    range_end, mode->mode);
-	if (!evict_nodes(test, &scan, nodes, order, count, true, &evict_list))
-		return -EINVAL;
-
-	memset(&tmp, 0, sizeof(tmp));
-	err = drm_mm_insert_node_generic(mm, &tmp, size, alignment, color,
-					 DRM_MM_INSERT_EVICT);
-	if (err) {
-		KUNIT_FAIL(test,
-			   "Failed to insert into eviction hole: size=%d, align=%d, color=%lu, err=%d\n",
-			   size, alignment, color, err);
-		show_scan(test, &scan);
-		show_holes(test, mm, 3);
-		return err;
-	}
-
-	if (tmp.start < range_start || tmp.start + tmp.size > range_end) {
-		KUNIT_FAIL(test,
-			   "Inserted [address=%llu + %llu] did not fit into the request range [%llu, %llu]\n",
-			   tmp.start, tmp.size, range_start, range_end);
-		err = -EINVAL;
-	}
-
-	if (colors_abutt(test, &tmp))
-		err = -EINVAL;
-
-	if (!assert_node(test, &tmp, mm, size, alignment, color)) {
-		KUNIT_FAIL(test,
-			   "Inserted did not fit the eviction hole: size=%lld [%d], align=%d [rem=%lld], start=%llx\n",
-			   tmp.size, size, alignment, misalignment(&tmp, alignment), tmp.start);
-		err = -EINVAL;
-	}
-
-	drm_mm_remove_node(&tmp);
-	if (err)
-		return err;
-
-	list_for_each_entry(e, &evict_list, link) {
-		err = drm_mm_reserve_node(mm, &e->node);
-		if (err) {
-			KUNIT_FAIL(test, "Failed to reinsert node after eviction: start=%llx\n",
-				   e->node.start);
-			return err;
-		}
-	}
-
-	cond_resched();
-	return 0;
-}
-
-static void drm_test_mm_color_evict(struct kunit *test)
-{
-	DRM_RND_STATE(prng, random_seed);
-	const unsigned int total_size = min(8192u, max_iterations);
-	const struct insert_mode *mode;
-	unsigned long color = 0;
-	struct drm_mm mm;
-	struct evict_node *nodes;
-	struct drm_mm_node *node, *next;
-	unsigned int *order, n;
-
-	/* Check that the drm_mm_scan also honours color adjustment when
-	 * choosing its victims to create a hole. Our color_adjust does not
-	 * allow two nodes to be placed together without an intervening hole
-	 * enlarging the set of victims that must be evicted.
-	 */
-
-	nodes = vzalloc(array_size(total_size, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	order = drm_random_order(total_size, &prng);
-	if (!order)
-		goto err_nodes;
-
-	drm_mm_init(&mm, 0, 2 * total_size - 1);
-	mm.color_adjust = separate_adjacent_colors;
-	for (n = 0; n < total_size; n++) {
-		if (!expect_insert(test, &mm, &nodes[n].node,
-				   1, 0, color++,
-				   &insert_modes[0])) {
-			KUNIT_FAIL(test, "insert failed, step %d\n", n);
-			goto out;
-		}
-	}
-
-	for (mode = evict_modes; mode->name; mode++) {
-		for (n = 1; n <= total_size; n <<= 1) {
-			drm_random_reorder(order, total_size, &prng);
-			if (evict_color(test, &mm, 0, U64_MAX, nodes, order, total_size,
-					n, 1, color++, mode)) {
-				KUNIT_FAIL(test, "%s evict_color(size=%u) failed\n", mode->name, n);
-				goto out;
-			}
-		}
-
-		for (n = 1; n < total_size; n <<= 1) {
-			drm_random_reorder(order, total_size, &prng);
-			if (evict_color(test, &mm, 0, U64_MAX, nodes, order, total_size,
-					total_size / 2, n, color++, mode)) {
-				KUNIT_FAIL(test, "%s evict_color(size=%u, alignment=%u) failed\n",
-					   mode->name, total_size / 2, n);
-				goto out;
-			}
-		}
-
-		for_each_prime_number_from(n, 1, min(total_size, max_prime)) {
-			unsigned int nsize = (total_size - n + 1) / 2;
-
-			DRM_MM_BUG_ON(!nsize);
-
-			drm_random_reorder(order, total_size, &prng);
-			if (evict_color(test, &mm, 0, U64_MAX, nodes, order, total_size,
-					nsize, n, color++, mode)) {
-				KUNIT_FAIL(test, "%s evict_color(size=%u, alignment=%u) failed\n",
-					   mode->name, nsize, n);
-				goto out;
-			}
-		}
-
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_nodes:
-	vfree(nodes);
-}
-
-static void drm_test_mm_color_evict_range(struct kunit *test)
-{
-	DRM_RND_STATE(prng, random_seed);
-	const unsigned int total_size = 8192;
-	const unsigned int range_size = total_size / 2;
-	const unsigned int range_start = total_size / 4;
-	const unsigned int range_end = range_start + range_size;
-	const struct insert_mode *mode;
-	unsigned long color = 0;
-	struct drm_mm mm;
-	struct evict_node *nodes;
-	struct drm_mm_node *node, *next;
-	unsigned int *order, n;
-
-	/* Like drm_test_mm_color_evict(), but limited to small portion of the full
-	 * drm_mm range.
-	 */
-
-	nodes = vzalloc(array_size(total_size, sizeof(*nodes)));
-	KUNIT_ASSERT_TRUE(test, nodes);
-
-	order = drm_random_order(total_size, &prng);
-	if (!order)
-		goto err_nodes;
-
-	drm_mm_init(&mm, 0, 2 * total_size - 1);
-	mm.color_adjust = separate_adjacent_colors;
-	for (n = 0; n < total_size; n++) {
-		if (!expect_insert(test, &mm, &nodes[n].node,
-				   1, 0, color++,
-				   &insert_modes[0])) {
-			KUNIT_FAIL(test, "insert failed, step %d\n", n);
-			goto out;
-		}
-	}
-
-	for (mode = evict_modes; mode->name; mode++) {
-		for (n = 1; n <= range_size; n <<= 1) {
-			drm_random_reorder(order, range_size, &prng);
-			if (evict_color(test, &mm, range_start, range_end, nodes, order,
-					total_size, n, 1, color++, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_color(size=%u) failed for range [%x, %x]\n",
-						mode->name, n, range_start, range_end);
-				goto out;
-			}
-		}
-
-		for (n = 1; n < range_size; n <<= 1) {
-			drm_random_reorder(order, total_size, &prng);
-			if (evict_color(test, &mm, range_start, range_end, nodes, order,
-					total_size, range_size / 2, n, color++, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_color(size=%u, alignment=%u) failed for range [%x, %x]\n",
-					   mode->name, total_size / 2, n, range_start, range_end);
-				goto out;
-			}
-		}
-
-		for_each_prime_number_from(n, 1, min(range_size, max_prime)) {
-			unsigned int nsize = (range_size - n + 1) / 2;
-
-			DRM_MM_BUG_ON(!nsize);
-
-			drm_random_reorder(order, total_size, &prng);
-			if (evict_color(test, &mm, range_start, range_end, nodes, order,
-					total_size, nsize, n, color++, mode)) {
-				KUNIT_FAIL(test,
-					   "%s evict_color(size=%u, alignment=%u) failed for range [%x, %x]\n",
-					   mode->name, nsize, n, range_start, range_end);
-				goto out;
-			}
-		}
-
-		cond_resched();
-	}
-
-out:
-	drm_mm_for_each_node_safe(node, next, &mm)
-		drm_mm_remove_node(node);
-	drm_mm_takedown(&mm);
-	kfree(order);
-err_nodes:
-	vfree(nodes);
-}
-
-static int drm_mm_suite_init(struct kunit_suite *suite)
-{
-	while (!random_seed)
-		random_seed = get_random_u32();
-
-	kunit_info(suite,
-		   "Testing DRM range manager, with random_seed=0x%x max_iterations=%u max_prime=%u\n",
-		   random_seed, max_iterations, max_prime);
-
-	return 0;
-}
-
-module_param(random_seed, uint, 0400);
-module_param(max_iterations, uint, 0400);
-module_param(max_prime, uint, 0400);
-
 static struct kunit_case drm_mm_tests[] = {
 	KUNIT_CASE(drm_test_mm_init),
 	KUNIT_CASE(drm_test_mm_debug),
-	KUNIT_CASE(drm_test_mm_reserve),
-	KUNIT_CASE(drm_test_mm_insert),
-	KUNIT_CASE(drm_test_mm_replace),
-	KUNIT_CASE(drm_test_mm_insert_range),
-	KUNIT_CASE(drm_test_mm_frag),
-	KUNIT_CASE(drm_test_mm_align),
 	KUNIT_CASE(drm_test_mm_align32),
 	KUNIT_CASE(drm_test_mm_align64),
-	KUNIT_CASE(drm_test_mm_evict),
-	KUNIT_CASE(drm_test_mm_evict_range),
-	KUNIT_CASE(drm_test_mm_topdown),
-	KUNIT_CASE(drm_test_mm_bottomup),
 	KUNIT_CASE(drm_test_mm_lowest),
 	KUNIT_CASE(drm_test_mm_highest),
-	KUNIT_CASE(drm_test_mm_color),
-	KUNIT_CASE(drm_test_mm_color_evict),
-	KUNIT_CASE(drm_test_mm_color_evict_range),
 	{}
 };
 
 static struct kunit_suite drm_mm_test_suite = {
 	.name = "drm_mm",
-	.suite_init = drm_mm_suite_init,
 	.test_cases = drm_mm_tests,
 };