diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e5b9d3c77139..b9f7903e60d1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2569,8 +2569,8 @@ intel_info(const struct drm_i915_private *dev_priv)
 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
 
 #define USES_PPGTT(dev_priv)		(i915_modparams.enable_ppgtt)
-#define USES_FULL_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt >= 2)
-#define USES_FULL_48BIT_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt == 3)
+#define USES_FULL_3LVL_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt >= 2)
+#define USES_FULL_4LVL_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt == 3)
 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
 	GEM_BUG_ON((sizes) == 0); \
 	((sizes) & ~(dev_priv)->info.page_sizes) == 0; \
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index f15a039772db..a0dc3170b358 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -361,7 +361,7 @@ i915_gem_create_context(struct drm_i915_private *dev_priv,
 	if (IS_ERR(ctx))
 		return ctx;
 
-	if (USES_FULL_PPGTT(dev_priv)) {
+	if (USES_FULL_3LVL_PPGTT(dev_priv)) {
 		struct i915_hw_ppgtt *ppgtt;
 
 		ppgtt = i915_ppgtt_create(dev_priv, file_priv);
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index a926d7d47183..166f1ea1786f 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -2201,7 +2201,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
 	eb.flags = (unsigned int *)(eb.vma + args->buffer_count + 1);
 
 	eb.invalid_flags = __EXEC_OBJECT_UNKNOWN_FLAGS;
-	if (USES_FULL_PPGTT(eb.i915))
+	if (USES_FULL_3LVL_PPGTT(eb.i915))
 		eb.invalid_flags |= EXEC_OBJECT_NEEDS_GTT;
 	reloc_cache_init(&eb.reloc_cache, eb.i915);
 
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 4137af4bd8f5..15f957a6ae38 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -136,19 +136,19 @@ static inline void i915_ggtt_invalidate(struct drm_i915_private *i915)
 int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
 			       	int enable_ppgtt)
 {
-	bool has_full_ppgtt;
-	bool has_full_48bit_ppgtt;
+	bool has_full_3lvl_ppgtt;
+	bool has_full_4lvl_ppgtt;
 
 	if (!dev_priv->info.has_aliasing_ppgtt)
 		return 0;
 
-	has_full_ppgtt = dev_priv->info.has_full_ppgtt;
-	has_full_48bit_ppgtt = dev_priv->info.has_full_48bit_ppgtt;
+	has_full_3lvl_ppgtt = dev_priv->info.has_full_3lvl_ppgtt;
+	has_full_4lvl_ppgtt = dev_priv->info.has_full_4lvl_ppgtt;
 
 	if (intel_vgpu_active(dev_priv)) {
 		/* GVT-g has no support for 32bit ppgtt */
-		has_full_ppgtt = false;
-		has_full_48bit_ppgtt = intel_vgpu_has_full_48bit_ppgtt(dev_priv);
+		has_full_3lvl_ppgtt = false;
+		has_full_4lvl_ppgtt = intel_vgpu_has_full_48bit_ppgtt(dev_priv);
 	}
 
 	/*
@@ -161,10 +161,10 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
 	if (enable_ppgtt == 1)
 		return 1;
 
-	if (enable_ppgtt == 2 && has_full_ppgtt)
+	if (enable_ppgtt == 2 && has_full_3lvl_ppgtt)
 		return 2;
 
-	if (enable_ppgtt == 3 && has_full_48bit_ppgtt)
+	if (enable_ppgtt == 3 && has_full_4lvl_ppgtt)
 		return 3;
 
 	/* Disable ppgtt on SNB if VT-d is on. */
@@ -173,10 +173,10 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
 		return 0;
 	}
 
-	if (has_full_48bit_ppgtt)
+	if (has_full_4lvl_ppgtt)
 		return 3;
 
-	if (has_full_ppgtt)
+	if (has_full_3lvl_ppgtt)
 		return 2;
 
 	return 1;
@@ -1647,9 +1647,10 @@ static struct i915_hw_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
 	ppgtt->vm.i915 = i915;
 	ppgtt->vm.dma = &i915->drm.pdev->dev;
 
-	ppgtt->vm.total = USES_FULL_48BIT_PPGTT(i915) ?
-		1ULL << 48 :
-		1ULL << 32;
+	if (USES_FULL_3LVL_PPGTT(i915) && !USES_FULL_4LVL_PPGTT(i915))
+		ppgtt->vm.total = 1ULL << 32;
+	else
+		ppgtt->vm.total = 1ULL << i915->info.full_ppgtt_bits;
 
 	/*
 	 * From bdw, there is support for read-only pages in the PPGTT.
@@ -1788,7 +1789,7 @@ static void gen8_ppgtt_enable(struct drm_i915_private *dev_priv)
 	enum intel_engine_id id;
 
 	for_each_engine(engine, dev_priv, id) {
-		u32 four_level = USES_FULL_48BIT_PPGTT(dev_priv) ?
+		u32 four_level = USES_FULL_4LVL_PPGTT(dev_priv) ?
 				 GEN8_GFX_PPGTT_48B : 0;
 		I915_WRITE(RING_MODE_GEN7(engine),
 			   _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE | four_level));
@@ -2958,7 +2959,7 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
 	/* And finally clear the reserved guard page */
 	ggtt->vm.clear_range(&ggtt->vm, ggtt->vm.total - PAGE_SIZE, PAGE_SIZE);
 
-	if (USES_PPGTT(dev_priv) && !USES_FULL_PPGTT(dev_priv)) {
+	if (USES_PPGTT(dev_priv) && !USES_FULL_3LVL_PPGTT(dev_priv)) {
 		ret = i915_gem_init_aliasing_ppgtt(dev_priv);
 		if (ret)
 			goto err;
@@ -3408,7 +3409,8 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 	ggtt->vm.cleanup = gen6_gmch_remove;
 	ggtt->vm.insert_page = gen8_ggtt_insert_page;
 	ggtt->vm.clear_range = nop_clear_range;
-	if (!USES_FULL_PPGTT(dev_priv) || intel_scanout_needs_vtd_wa(dev_priv))
+	if (!USES_FULL_3LVL_PPGTT(dev_priv) ||
+	    intel_scanout_needs_vtd_wa(dev_priv))
 		ggtt->vm.clear_range = gen8_ggtt_clear_range;
 
 	ggtt->vm.insert_entries = gen8_ggtt_insert_entries;
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 295e981e4a39..71ac381807a6 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -84,7 +84,8 @@ i915_param_named_unsafe(enable_hangcheck, bool, 0644,
 
 i915_param_named_unsafe(enable_ppgtt, int, 0400,
 	"Override PPGTT usage. "
-	"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
+	"(-1=auto [default], 0=disabled, 1=aliasing, 2=full with 32 bits, "
+	"3=full with extended address space)");
 
 i915_param_named_unsafe(enable_psr, int, 0600,
 	"Enable PSR "
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index d6f7b9fe1d26..6e0d4476e553 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -298,7 +298,8 @@ static const struct intel_device_info intel_sandybridge_m_gt2_info = {
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
 	.has_aliasing_ppgtt = 1, \
-	.has_full_ppgtt = 1, \
+	.has_full_3lvl_ppgtt = 1, \
+	.full_ppgtt_bits = 32, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	GEN_DEFAULT_PAGE_SIZES, \
 	IVB_CURSOR_OFFSETS
@@ -352,7 +353,8 @@ static const struct intel_device_info intel_valleyview_info = {
 	.has_gmch_display = 1,
 	.has_hotplug = 1,
 	.has_aliasing_ppgtt = 1,
-	.has_full_ppgtt = 1,
+	.has_full_3lvl_ppgtt = 1,
+	.full_ppgtt_bits = 32,
 	.has_snoop = true,
 	.has_coherent_ggtt = false,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
@@ -399,7 +401,8 @@ static const struct intel_device_info intel_haswell_gt3_info = {
 	.page_sizes = I915_GTT_PAGE_SIZE_4K | \
 		      I915_GTT_PAGE_SIZE_2M, \
 	.has_logical_ring_contexts = 1, \
-	.has_full_48bit_ppgtt = 1, \
+	.has_full_4lvl_ppgtt = 1, \
+	.full_ppgtt_bits = 48, \
 	.has_64bit_reloc = 1, \
 	.has_reset_engine = 1
 
@@ -444,7 +447,8 @@ static const struct intel_device_info intel_cherryview_info = {
 	.has_logical_ring_contexts = 1,
 	.has_gmch_display = 1,
 	.has_aliasing_ppgtt = 1,
-	.has_full_ppgtt = 1,
+	.has_full_3lvl_ppgtt = 1,
+	.full_ppgtt_bits = 32,
 	.has_reset_engine = 1,
 	.has_snoop = true,
 	.has_coherent_ggtt = false,
@@ -519,8 +523,9 @@ static const struct intel_device_info intel_skylake_gt4_info = {
 	.has_logical_ring_preemption = 1, \
 	.has_guc = 1, \
 	.has_aliasing_ppgtt = 1, \
-	.has_full_ppgtt = 1, \
-	.has_full_48bit_ppgtt = 1, \
+	.has_full_3lvl_ppgtt = 1, \
+	.has_full_4lvl_ppgtt = 1, \
+	.full_ppgtt_bits = 48, \
 	.has_reset_engine = 1, \
 	.has_snoop = true, \
 	.has_coherent_ggtt = false, \
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 6eecd64734d5..df3263b97c7d 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -87,8 +87,8 @@ enum intel_platform {
 	func(has_reset_engine); \
 	func(has_fbc); \
 	func(has_fpga_dbg); \
-	func(has_full_ppgtt); \
-	func(has_full_48bit_ppgtt); \
+	func(has_full_3lvl_ppgtt); \
+	func(has_full_4lvl_ppgtt); \
 	func(has_gmch_display); \
 	func(has_guc); \
 	func(has_guc_ct); \
@@ -182,6 +182,9 @@ struct intel_device_info {
 		u16 degamma_lut_size;
 		u16 gamma_lut_size;
 	} color;
+
+	/* PPGTT bit size */
+	int full_ppgtt_bits;
 };
 
 struct intel_driver_caps {
diff --git a/drivers/gpu/drm/i915/selftests/huge_pages.c b/drivers/gpu/drm/i915/selftests/huge_pages.c
index e272127783fe..9f74244ef3e1 100644
--- a/drivers/gpu/drm/i915/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/selftests/huge_pages.c
@@ -1434,7 +1434,7 @@ static int igt_ppgtt_pin_update(void *arg)
 	 * huge-gtt-pages.
 	 */
 
-	if (!USES_FULL_48BIT_PPGTT(dev_priv)) {
+	if (!USES_FULL_4LVL_PPGTT(dev_priv)) {
 		pr_info("48b PPGTT not supported, skipping\n");
 		return 0;
 	}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 128ad1cf0647..05df36863694 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -351,7 +351,7 @@ static int igt_evict_contexts(void *arg)
 	 * where the GTT space of the request is separate from the GGTT
 	 * allocation required to build the request.
 	 */
-	if (!USES_FULL_PPGTT(i915))
+	if (!USES_FULL_3LVL_PPGTT(i915))
 		return 0;
 
 	mutex_lock(&i915->drm.struct_mutex);
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 8e2e269db97e..49420e98f374 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1001,7 +1001,7 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv,
 	IGT_TIMEOUT(end_time);
 	int err;
 
-	if (!USES_FULL_PPGTT(dev_priv))
+	if (!USES_FULL_3LVL_PPGTT(dev_priv))
 		return 0;
 
 	file = mock_file(dev_priv);
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 43ed8b28aeaa..33d7225edbbb 100644
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -181,6 +181,8 @@ struct drm_i915_private *mock_gem_device(void)
 		I915_GTT_PAGE_SIZE_64K |
 		I915_GTT_PAGE_SIZE_2M;
 
+	mkwrite_device_info(i915)->full_ppgtt_bits = 48;
+
 	mock_uncore_init(i915);
 	i915_gem_init__mm(i915);
 
