diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
index da60c29468a7..741e7609e511 100644
--- a/drivers/edac/ghes_edac.c
+++ b/drivers/edac/ghes_edac.c
@@ -372,8 +372,12 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
 		p += sprintf(p, "rank:%d ", mem_err->rank);
 	if (mem_err->validation_bits & CPER_MEM_VALID_BANK)
 		p += sprintf(p, "bank:%d ", mem_err->bank);
-	if (mem_err->validation_bits & CPER_MEM_VALID_ROW)
-		p += sprintf(p, "row:%d ", mem_err->row);
+	if (mem_err->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) {
+		u32 row = mem_err->row;
+
+		row |= cper_get_mem_extension(mem_err->validation_bits, mem_err->extended);
+		p += sprintf(p, "row:%d ", row);
+	}
 	if (mem_err->validation_bits & CPER_MEM_VALID_COLUMN)
 		p += sprintf(p, "col:%d ", mem_err->column);
 	if (mem_err->validation_bits & CPER_MEM_VALID_BIT_POSITION)
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index f564e15fbc7e..a60acd17bcaa 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -234,8 +234,12 @@ static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
 		n += scnprintf(msg + n, len - n, "bank: %d ", mem->bank);
 	if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
 		n += scnprintf(msg + n, len - n, "device: %d ", mem->device);
-	if (mem->validation_bits & CPER_MEM_VALID_ROW)
-		n += scnprintf(msg + n, len - n, "row: %d ", mem->row);
+	if (mem->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) {
+		u32 row = mem->row;
+
+		row |= cper_get_mem_extension(mem->validation_bits, mem->extended);
+		n += scnprintf(msg + n, len - n, "row: %d ", row);
+	}
 	if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
 		n += scnprintf(msg + n, len - n, "column: %d ", mem->column);
 	if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
@@ -292,6 +296,7 @@ void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
 	cmem->requestor_id = mem->requestor_id;
 	cmem->responder_id = mem->responder_id;
 	cmem->target_id = mem->target_id;
+	cmem->extended = mem->extended;
 	cmem->rank = mem->rank;
 	cmem->mem_array_handle = mem->mem_array_handle;
 	cmem->mem_dev_handle = mem->mem_dev_handle;
diff --git a/include/linux/cper.h b/include/linux/cper.h
index 8537e9282a65..bd2d8a77a784 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -230,6 +230,10 @@ enum {
 #define CPER_MEM_VALID_RANK_NUMBER		0x8000
 #define CPER_MEM_VALID_CARD_HANDLE		0x10000
 #define CPER_MEM_VALID_MODULE_HANDLE		0x20000
+#define CPER_MEM_VALID_ROW_EXT			0x40000
+
+#define CPER_MEM_EXT_ROW_MASK			0x3
+#define CPER_MEM_EXT_ROW_SHIFT			16
 
 #define CPER_PCIE_VALID_PORT_TYPE		0x0001
 #define CPER_PCIE_VALID_VERSION			0x0002
@@ -443,7 +447,7 @@ struct cper_sec_mem_err_old {
 	u8	error_type;
 };
 
-/* Memory Error Section (UEFI >= v2.3), UEFI v2.7 sec N.2.5 */
+/* Memory Error Section (UEFI >= v2.3), UEFI v2.8 sec N.2.5 */
 struct cper_sec_mem_err {
 	u64	validation_bits;
 	u64	error_status;
@@ -461,7 +465,7 @@ struct cper_sec_mem_err {
 	u64	responder_id;
 	u64	target_id;
 	u8	error_type;
-	u8	reserved;
+	u8	extended;
 	u16	rank;
 	u16	mem_array_handle;	/* "card handle" in UEFI 2.4 */
 	u16	mem_dev_handle;		/* "module handle" in UEFI 2.4 */
@@ -483,8 +487,16 @@ struct cper_mem_err_compact {
 	u16	rank;
 	u16	mem_array_handle;
 	u16	mem_dev_handle;
+	u8      extended;
 };
 
+static inline u32 cper_get_mem_extension(u64 mem_valid, u8 mem_extended)
+{
+	if (!(mem_valid & CPER_MEM_VALID_ROW_EXT))
+		return 0;
+	return (mem_extended & CPER_MEM_EXT_ROW_MASK) << CPER_MEM_EXT_ROW_SHIFT;
+}
+
 /* PCI Express Error Section, UEFI v2.7 sec N.2.7 */
 struct cper_sec_pcie {
 	u64		validation_bits;