powerpc/64s: Refine feature sets for little endian builds

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>

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 7e22607..4e332f3 100644 (file)
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -483,6 +483,13 @@ 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 | \
@@ -490,6 +497,7 @@ 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 {
@@ -536,12 +544,19 @@ 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 {