From 9bb239ba5829de991f0c4161549e7bea8288b31a Mon Sep 17 00:00:00 2001
From: Nicholas Piggin <npiggin@gmail.com>
Date: Wed, 21 Feb 2018 05:08:31 +1000
Subject: [PATCH 08/13] powerpc/64s: Refine feature sets for little endian
 builds

References: bsc#1055117
Patch-mainline: v4.17-rc1
Git-commit: db5ae1c155af7a76c9f538bf134066303089679d

This reduces vmlinux text size by 1kB and data by 1.5kB with a small
build!

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Add the recently added CPU_FTRS_POWER9_DD2_2 to the little
      endian possible mask as noticed by Nick.]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/include/asm/cputable.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 2b40dddb18c2..dd23edd130cc 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -482,6 +482,13 @@ static inline void cpu_feature_keys_init(void) { }
 #ifdef CONFIG_PPC_BOOK3E
 #define CPU_FTRS_POSSIBLE	(CPU_FTRS_E6500 | CPU_FTRS_E5500)
 #else
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define CPU_FTRS_POSSIBLE	\
+	    (CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | CPU_FTRS_POWER8 | \
+	     CPU_FTRS_POWER8_DD1 | CPU_FTR_ALTIVEC_COMP | CPU_FTR_VSX_COMP | \
+	     CPU_FTRS_POWER9 | CPU_FTRS_POWER9_DD1 | CPU_FTRS_POWER9_DD2_1 | \
+	     CPU_FTRS_POWER9_DD2_2)
+#else
 #define CPU_FTRS_POSSIBLE	\
 	    (CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \
 	     CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \
@@ -489,6 +496,7 @@ static inline void cpu_feature_keys_init(void) { }
 	     CPU_FTRS_PA6T | CPU_FTR_VSX_COMP | CPU_FTR_ALTIVEC_COMP | \
 	     CPU_FTRS_POWER9 | CPU_FTRS_POWER9_DD1 | CPU_FTRS_POWER9_DD2_1 | \
 	     CPU_FTRS_POWER9_DD2_2)
+#endif /* CONFIG_CPU_LITTLE_ENDIAN */
 #endif
 #else
 enum {
@@ -535,12 +543,19 @@ enum {
 #ifdef CONFIG_PPC_BOOK3E
 #define CPU_FTRS_ALWAYS		(CPU_FTRS_E6500 & CPU_FTRS_E5500)
 #else
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define CPU_FTRS_ALWAYS \
+	    (CPU_FTRS_POSSIBLE & ~CPU_FTR_HVMODE & CPU_FTRS_POWER7 & \
+	     CPU_FTRS_POWER8E & CPU_FTRS_POWER8 & CPU_FTRS_POWER8_DD1 & \
+	     CPU_FTRS_POWER9 & CPU_FTRS_POWER9_DD1 & CPU_FTRS_POWER9_DD2_1)
+#else
 #define CPU_FTRS_ALWAYS		\
 	    (CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & \
 	     CPU_FTRS_POWER6 & CPU_FTRS_POWER7 & CPU_FTRS_CELL & \
 	     CPU_FTRS_PA6T & CPU_FTRS_POWER8 & CPU_FTRS_POWER8E & \
 	     CPU_FTRS_POWER8_DD1 & ~CPU_FTR_HVMODE & CPU_FTRS_POSSIBLE & \
 	     CPU_FTRS_POWER9 & CPU_FTRS_POWER9_DD1 & CPU_FTRS_POWER9_DD2_1)
+#endif /* CONFIG_CPU_LITTLE_ENDIAN */
 #endif
 #else
 enum {
-- 
2.13.6