diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index b8795fc4909753..66a0142dc78c7b 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -298,6 +298,47 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
 out_err:
 	return -EINVAL;
 }
+
+static int __init acpi_parse_cfmws(union acpi_subtable_headers *header,
+				   void *arg, const unsigned long table_end)
+{
+	struct acpi_cedt_cfmws *cfmws;
+	int *fake_pxm = arg;
+	u64 start, end;
+	int node;
+
+	cfmws = (struct acpi_cedt_cfmws *)header;
+	start = cfmws->base_hpa;
+	end = cfmws->base_hpa + cfmws->window_size;
+
+	/* Skip if the SRAT already described the NUMA details for this HPA */
+	node = phys_to_target_node(start);
+	if (node != NUMA_NO_NODE)
+		return 0;
+
+	node = acpi_map_pxm_to_node(*fake_pxm);
+
+	if (node == NUMA_NO_NODE) {
+		pr_err("ACPI NUMA: Too many proximity domains while processing CFMWS.\n");
+		return -EINVAL;
+	}
+
+	if (numa_add_memblk(node, start, end) < 0) {
+		/* CXL driver must handle the NUMA_NO_NODE case */
+		pr_warn("ACPI NUMA: Failed to add memblk for CFMWS node %d [mem %#llx-%#llx]\n",
+			node, start, end);
+	}
+
+	/* Set the next available fake_pxm value */
+	(*fake_pxm)++;
+	return 0;
+}
+#else
+static int __init acpi_parse_cfmws(union acpi_subtable_headers *header,
+				   void *arg, const unsigned long table_end)
+{
+	return 0;
+}
 #endif /* defined(CONFIG_X86) || defined (CONFIG_ARM64) */
 
 static int __init acpi_parse_slit(struct acpi_table_header *table)
@@ -442,7 +483,7 @@ acpi_table_parse_srat(enum acpi_srat_type id,
 
 int __init acpi_numa_init(void)
 {
-	int cnt = 0;
+	int i, fake_pxm, cnt = 0;
 
 	if (acpi_disabled)
 		return -EINVAL;
@@ -478,6 +519,22 @@ int __init acpi_numa_init(void)
 	/* SLIT: System Locality Information Table */
 	acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
 
+	/*
+	 * CXL Fixed Memory Window Structures (CFMWS) must be parsed
+	 * after the SRAT. Create NUMA Nodes for CXL memory ranges that
+	 * are defined in the CFMWS and not already defined in the SRAT.
+	 * Initialize a fake_pxm as the first available PXM to emulate.
+	 */
+
+	/* fake_pxm is the next unused PXM value after SRAT parsing */
+	for (i = 0, fake_pxm = -1; i < MAX_NUMNODES - 1; i++) {
+		if (node_to_pxm_map[i] > fake_pxm)
+			fake_pxm = node_to_pxm_map[i];
+	}
+	fake_pxm++;
+	acpi_table_parse_cedt(ACPI_CEDT_TYPE_CFMWS, acpi_parse_cfmws,
+			      &fake_pxm);
+
 	if (cnt < 0)
 		return cnt;
 	else if (!parsed_numa_memblks)
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c
index 91e4072e76497c..3163167ecc3a45 100644
--- a/drivers/cxl/acpi.c
+++ b/drivers/cxl/acpi.c
@@ -125,7 +125,8 @@ static int cxl_parse_cfmws(union acpi_subtable_headers *header, void *arg,
 			cfmws->base_hpa + cfmws->window_size - 1);
 		return 0;
 	}
-	dev_dbg(dev, "add: %s range %#llx-%#llx\n", dev_name(&cxld->dev),
+	dev_dbg(dev, "add: %s node: %d range %#llx-%#llx\n",
+		dev_name(&cxld->dev), phys_to_target_node(cxld->range.start),
 		cfmws->base_hpa, cfmws->base_hpa + cfmws->window_size - 1);
 
 	return 0;