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Commit db5ae1c1 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

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: default avatarNicholas 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: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent a73657ea

arch/powerpc/include/asm/cputable.h

+15 −0
Original line number Diff line number Diff line
@@ -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 {