diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 49b7faf7bbf2aa01a2dfa61c51a961208894fa76..ed3cdcb501985e42b0da216a68d59d363342334d 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -47,6 +47,7 @@
 #define EX_R3		64
 #define EX_LR		72
 #define EX_CFAR		80
+#define EX_PPR		88	/* SMT thread status register (priority) */
 
 #ifdef CONFIG_RELOCATABLE
 #define EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)			\
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index e9e7a6999bb8ed4aff7e02da633b69a606b3b264..c47d687ab01beb8e641472b604a8fad4794785d8 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -93,9 +93,9 @@ struct paca_struct {
 	 * Now, starting in cacheline 2, the exception save areas
 	 */
 	/* used for most interrupts/exceptions */
-	u64 exgen[11] __attribute__((aligned(0x80)));
-	u64 exmc[11];		/* used for machine checks */
-	u64 exslb[11];		/* used for SLB/segment table misses
+	u64 exgen[12] __attribute__((aligned(0x80)));
+	u64 exmc[12];		/* used for machine checks */
+	u64 exslb[12];		/* used for SLB/segment table misses
  				 * on the linear mapping */
 	/* SLB related definitions */
 	u16 vmalloc_sllp;