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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>
This commit is contained in:
Nicholas Piggin 2018-02-21 05:08:31 +10:00 committed by Michael Ellerman
parent a73657ea19
commit db5ae1c155
1 changed files with 15 additions and 0 deletions
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15
arch/powerpc/include/asm/cputable.h
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@ -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 {