diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl
index aa65dc5b4e13..a0562938ecac 100644
--- a/Documentation/ABI/testing/sysfs-bus-cxl
+++ b/Documentation/ABI/testing/sysfs-bus-cxl
@@ -351,20 +351,20 @@ Description:
 		interleave_granularity).
 
 
-What:		/sys/bus/cxl/devices/decoderX.Y/create_{pmem,ram}_region
+What:		/sys/bus/cxl/devices/decoderX.Y/create_{pmem,ram,dc}_region
 Date:		May, 2022, January, 2023
-KernelVersion:	v6.0 (pmem), v6.3 (ram)
+KernelVersion:	v6.0 (pmem), v6.3 (ram), v6.6 (dc)
 Contact:	linux-cxl@vger.kernel.org
 Description:
 		(RW) Write a string in the form 'regionZ' to start the process
-		of defining a new persistent, or volatile memory region
-		(interleave-set) within the decode range bounded by root decoder
-		'decoderX.Y'. The value written must match the current value
-		returned from reading this attribute. An atomic compare exchange
-		operation is done on write to assign the requested id to a
-		region and allocate the region-id for the next creation attempt.
-		EBUSY is returned if the region name written does not match the
-		current cached value.
+		of defining a new persistent, volatile, or Dynamic Capacity
+		(DC) memory region (interleave-set) within the decode range
+		bounded by root decoder 'decoderX.Y'. The value written must
+		match the current value returned from reading this attribute.
+		An atomic compare exchange operation is done on write to assign
+		the requested id to a region and allocate the region-id for the
+		next creation attempt.  EBUSY is returned if the region name
+		written does not match the current cached value.
 
 
 What:		/sys/bus/cxl/devices/decoderX.Y/delete_region
diff --git a/drivers/cxl/core/core.h b/drivers/cxl/core/core.h
index 45e7e044cf4a..cf3cf01cb95d 100644
--- a/drivers/cxl/core/core.h
+++ b/drivers/cxl/core/core.h
@@ -13,6 +13,7 @@ extern struct attribute_group cxl_base_attribute_group;
 #ifdef CONFIG_CXL_REGION
 extern struct device_attribute dev_attr_create_pmem_region;
 extern struct device_attribute dev_attr_create_ram_region;
+extern struct device_attribute dev_attr_create_dc_region;
 extern struct device_attribute dev_attr_delete_region;
 extern struct device_attribute dev_attr_region;
 extern const struct device_type cxl_pmem_region_type;
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index a5db710a63bc..608901bb7d91 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -314,6 +314,7 @@ static struct attribute *cxl_decoder_root_attrs[] = {
 	&dev_attr_target_list.attr,
 	SET_CXL_REGION_ATTR(create_pmem_region)
 	SET_CXL_REGION_ATTR(create_ram_region)
+	SET_CXL_REGION_ATTR(create_dc_region)
 	SET_CXL_REGION_ATTR(delete_region)
 	NULL,
 };
diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index 69af1354bc5b..fc8dee469244 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -2271,6 +2271,7 @@ static struct cxl_region *devm_cxl_add_region(struct cxl_root_decoder *cxlrd,
 	switch (mode) {
 	case CXL_REGION_RAM:
 	case CXL_REGION_PMEM:
+	case CXL_REGION_DC:
 		break;
 	default:
 		dev_err(&cxlrd->cxlsd.cxld.dev, "unsupported mode %s\n",
@@ -2383,6 +2384,33 @@ static ssize_t create_ram_region_store(struct device *dev,
 }
 DEVICE_ATTR_RW(create_ram_region);
 
+static ssize_t create_dc_region_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	return __create_region_show(to_cxl_root_decoder(dev), buf);
+}
+
+static ssize_t create_dc_region_store(struct device *dev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t len)
+{
+	struct cxl_root_decoder *cxlrd = to_cxl_root_decoder(dev);
+	struct cxl_region *cxlr;
+	int rc, id;
+
+	rc = sscanf(buf, "region%d\n", &id);
+	if (rc != 1)
+		return -EINVAL;
+
+	cxlr = __create_region(cxlrd, id, CXL_REGION_DC,
+			       CXL_DECODER_HOSTONLYMEM);
+	if (IS_ERR(cxlr))
+		return PTR_ERR(cxlr);
+
+	return len;
+}
+DEVICE_ATTR_RW(create_dc_region);
+
 static ssize_t region_show(struct device *dev, struct device_attribute *attr,
 			   char *buf)
 {
@@ -2834,7 +2862,7 @@ static void cxlr_dax_unregister(void *_cxlr_dax)
 	device_unregister(&cxlr_dax->dev);
 }
 
-static int devm_cxl_add_dax_region(struct cxl_region *cxlr)
+static int __devm_cxl_add_dax_region(struct cxl_region *cxlr)
 {
 	struct cxl_dax_region *cxlr_dax;
 	struct device *dev;
@@ -2863,6 +2891,21 @@ static int devm_cxl_add_dax_region(struct cxl_region *cxlr)
 	return rc;
 }
 
+static int devm_cxl_add_dax_region(struct cxl_region *cxlr)
+{
+	return __devm_cxl_add_dax_region(cxlr);
+}
+
+static int devm_cxl_add_dc_dax_region(struct cxl_region *cxlr)
+{
+	if (cxlr->params.interleave_ways != 1) {
+		dev_err(&cxlr->dev, "Interleaving DC not supported\n");
+		return -EINVAL;
+	}
+
+	return __devm_cxl_add_dax_region(cxlr);
+}
+
 static int match_decoder_by_range(struct device *dev, void *data)
 {
 	struct range *r1, *r2 = data;
@@ -3203,6 +3246,19 @@ static int is_system_ram(struct resource *res, void *arg)
 	return 1;
 }
 
+/*
+ * The region can not be manged by CXL if any portion of
+ * it is already online as 'System RAM'
+ */
+static bool region_is_system_ram(struct cxl_region *cxlr,
+				 struct cxl_region_params *p)
+{
+	return (walk_iomem_res_desc(IORES_DESC_NONE,
+				    IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY,
+				    p->res->start, p->res->end, cxlr,
+				    is_system_ram) > 0);
+}
+
 static int cxl_region_probe(struct device *dev)
 {
 	struct cxl_region *cxlr = to_cxl_region(dev);
@@ -3242,14 +3298,7 @@ static int cxl_region_probe(struct device *dev)
 	case CXL_REGION_PMEM:
 		return devm_cxl_add_pmem_region(cxlr);
 	case CXL_REGION_RAM:
-		/*
-		 * The region can not be manged by CXL if any portion of
-		 * it is already online as 'System RAM'
-		 */
-		if (walk_iomem_res_desc(IORES_DESC_NONE,
-					IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY,
-					p->res->start, p->res->end, cxlr,
-					is_system_ram) > 0)
+		if (region_is_system_ram(cxlr, p))
 			return 0;
 
 		/*
@@ -3261,6 +3310,10 @@ static int cxl_region_probe(struct device *dev)
 
 		/* HDM-H routes to device-dax */
 		return devm_cxl_add_dax_region(cxlr);
+	case CXL_REGION_DC:
+		if (region_is_system_ram(cxlr, p))
+			return 0;
+		return devm_cxl_add_dc_dax_region(cxlr);
 	default:
 		dev_dbg(&cxlr->dev, "unsupported region mode: %s\n",
 			cxl_region_mode_name(cxlr->mode));
diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
index 0ee96e6fc426..b76e49813a39 100644
--- a/drivers/dax/bus.c
+++ b/drivers/dax/bus.c
@@ -169,6 +169,11 @@ static bool is_static(struct dax_region *dax_region)
 	return (dax_region->res.flags & IORESOURCE_DAX_STATIC) != 0;
 }
 
+static bool is_dynamic(struct dax_region *dax_region)
+{
+	return (dax_region->res.flags & IORESOURCE_DAX_DYNAMIC_CAP) != 0;
+}
+
 bool static_dev_dax(struct dev_dax *dev_dax)
 {
 	return is_static(dev_dax->region);
@@ -285,6 +290,9 @@ static unsigned long long dax_region_avail_size(struct dax_region *dax_region)
 
 	device_lock_assert(dax_region->dev);
 
+	if (is_dynamic(dax_region))
+		return 0;
+
 	for_each_dax_region_resource(dax_region, res)
 		size -= resource_size(res);
 	return size;
diff --git a/drivers/dax/bus.h b/drivers/dax/bus.h
index 1ccd23360124..74d8fe4a5532 100644
--- a/drivers/dax/bus.h
+++ b/drivers/dax/bus.h
@@ -13,6 +13,7 @@ struct dax_region;
 /* dax bus specific ioresource flags */
 #define IORESOURCE_DAX_STATIC BIT(0)
 #define IORESOURCE_DAX_KMEM BIT(1)
+#define IORESOURCE_DAX_DYNAMIC_CAP BIT(2)
 
 struct dax_region *alloc_dax_region(struct device *parent, int region_id,
 		struct range *range, int target_node, unsigned int align,
diff --git a/drivers/dax/cxl.c b/drivers/dax/cxl.c
index 8bc9d04034d6..147c8c69782b 100644
--- a/drivers/dax/cxl.c
+++ b/drivers/dax/cxl.c
@@ -13,19 +13,30 @@ static int cxl_dax_region_probe(struct device *dev)
 	struct cxl_region *cxlr = cxlr_dax->cxlr;
 	struct dax_region *dax_region;
 	struct dev_dax_data data;
+	resource_size_t dev_size;
+	unsigned long flags;
 
 	if (nid == NUMA_NO_NODE)
 		nid = memory_add_physaddr_to_nid(cxlr_dax->hpa_range.start);
 
+	dev_size = range_len(&cxlr_dax->hpa_range);
+
+	flags = IORESOURCE_DAX_KMEM;
+	if (cxlr->mode == CXL_REGION_DC) {
+		/* Add empty seed dax device */
+		dev_size = 0;
+		flags |= IORESOURCE_DAX_DYNAMIC_CAP;
+	}
+
 	dax_region = alloc_dax_region(dev, cxlr->id, &cxlr_dax->hpa_range, nid,
-				      PMD_SIZE, IORESOURCE_DAX_KMEM);
+				      PMD_SIZE, flags);
 	if (!dax_region)
 		return -ENOMEM;
 
 	data = (struct dev_dax_data) {
 		.dax_region = dax_region,
 		.id = -1,
-		.size = range_len(&cxlr_dax->hpa_range),
+		.size = dev_size,
 	};
 
 	return PTR_ERR_OR_ZERO(devm_create_dev_dax(&data));
