diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 6ec9c9fb7b0d..111377f210ed 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -498,6 +498,7 @@ static int query_memregion_info(struct drm_i915_private *i915,
 		info.region.memory_class = mr->type;
 		info.region.memory_instance = mr->instance;
 		info.probed_size = mr->total;
+		info.gtt_alignment = mr->min_page_size;
 
 		if (mr->type == INTEL_MEMORY_LOCAL)
 			info.probed_cpu_visible_size = mr->io_size;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 08d69e36fb66..2e613109356b 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -3346,8 +3346,33 @@ struct drm_i915_memory_region_info {
 	/** @region: The class:instance pair encoding */
 	struct drm_i915_gem_memory_class_instance region;
 
-	/** @rsvd0: MBZ */
-	__u32 rsvd0;
+	union {
+		/** @rsvd0: MBZ */
+		__u32 rsvd0;
+		/**
+		 * @gtt_alignment:
+		 *
+		 * The minimum required GTT alignment for this type of memory.
+		 * When allocating a GTT address it must be aligned to this
+		 * value or larger. On some platforms the kernel might opt to
+		 * using 64K pages for I915_MEMORY_CLASS_DEVICE, where 64K GTT
+		 * pages can then be used if we also use 64K GTT alignment.
+		 *
+		 * NOTE: If this is zero then this must be an older
+		 * kernel which lacks support for this field.
+		 *
+		 * Side note: For larger objects (especially for
+		 * I915_MEMORY_CLASS_DEVICE), like 2M+ in size, userspace should
+		 * consider potentially bumping the GTT alignment to say 2M,
+		 * which could potentially increase the likelihood of the kernel
+		 * being able to utilise 2M GTT pages underneath, if the layout
+		 * of the physical pages allows it.  On some configurations we
+		 * can then also use a more efficient page-table layout, if we
+		 * can't use the more desirable 2M GTT page, so long as we know
+		 * that the entire page-table will be used by this object.
+		 */
+		__u32 gtt_alignment;
+	};
 
 	/**
 	 * @probed_size: Memory probed by the driver