diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm/mce.h
index 8d0b1c24c636..314ed3f13d59 100644
--- a/arch/powerpc/include/asm/mce.h
+++ b/arch/powerpc/include/asm/mce.h

@@ -110,17 +110,18 @@ enum MCE_LinkErrorType {
 };
 
 struct machine_check_event {
-	enum MCE_Version	version:8;	/* 0x00 */
-	uint8_t			in_use;		/* 0x01 */
-	enum MCE_Severity	severity:8;	/* 0x02 */
-	enum MCE_Initiator	initiator:8;	/* 0x03 */
-	enum MCE_ErrorType	error_type:8;	/* 0x04 */
-	enum MCE_Disposition	disposition:8;	/* 0x05 */
-	uint16_t		cpu;		/* 0x06 */
-	uint64_t		gpr3;		/* 0x08 */
-	uint64_t		srr0;		/* 0x10 */
-	uint64_t		srr1;		/* 0x18 */
-	union {					/* 0x20 */
+	enum MCE_Version	version:8;
+	uint8_t			in_use;
+	enum MCE_Severity	severity:8;
+	enum MCE_Initiator	initiator:8;
+	enum MCE_ErrorType	error_type:8;
+	enum MCE_Disposition	disposition:8;
+	uint8_t			sync_error;
+	uint16_t		cpu;
+	uint64_t		gpr3;
+	uint64_t		srr0;
+	uint64_t		srr1;

@@ -194,6 +195,7 @@ struct mce_error_info {
 	} u;
 	enum MCE_Severity	severity:8;
 	enum MCE_Initiator	initiator:8;
+	uint8_t			sync_error;

diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 6b800eec31f2..06161de19060 100644
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c

@@ -133,106 +133,107 @@ struct mce_ierror_table {
 	unsigned int error_subtype;
 	unsigned int initiator;
 	unsigned int severity;
+	bool sync_error;
 };

@@ -539,8 +543,9 @@ static int mce_handle_derror(struct pt_regs *regs,
 		return handled;
 
 	mce_err->error_type = MCE_ERROR_TYPE_UNKNOWN;
-	mce_err->severity = MCE_SEV_ERROR_SYNC;
+	mce_err->severity = MCE_SEV_SEVERE;
 	mce_err->initiator = MCE_INITIATOR_CPU;
+	mce_err->sync_error = 1;