Add a new CPU feature bit, CPU_FTR_UNALIGNED_LD_STD, to be added to the 64bit powerpc chips that can do unaligned load double and store double (and not take a performance hit from it).
This is added to Power6 and Cell and will be used in an upcoming patch to do the alignment in memcpy() only on CPUs that require it. Signed-off-by: Mark Nelson <[EMAIL PROTECTED]> --- arch/powerpc/include/asm/cputable.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) Index: upstream/arch/powerpc/include/asm/cputable.h =================================================================== --- upstream.orig/arch/powerpc/include/asm/cputable.h +++ upstream/arch/powerpc/include/asm/cputable.h @@ -194,6 +194,7 @@ extern const char *powerpc_base_platform #define CPU_FTR_VSX LONG_ASM_CONST(0x0010000000000000) #define CPU_FTR_SAO LONG_ASM_CONST(0x0020000000000000) #define CPU_FTR_CP_USE_DCBTZ LONG_ASM_CONST(0x0040000000000000) +#define CPU_FTR_UNALIGNED_LD_STD LONG_ASM_CONST(0x0080000000000000) #ifndef __ASSEMBLY__ @@ -404,7 +405,7 @@ extern const char *powerpc_base_platform CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_COHERENT_ICACHE | CPU_FTR_LOCKLESS_TLBIE | \ CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ - CPU_FTR_DSCR) + CPU_FTR_DSCR | CPU_FTR_UNALIGNED_LD_STD) #define CPU_FTRS_POWER7 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -415,7 +416,8 @@ extern const char *powerpc_base_platform CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_PAUSE_ZERO | CPU_FTR_CI_LARGE_PAGE | \ - CPU_FTR_CELL_TB_BUG | CPU_FTR_CP_USE_DCBTZ) + CPU_FTR_CELL_TB_BUG | CPU_FTR_CP_USE_DCBTZ | \ + CPU_FTR_UNALIGNED_LD_STD) #define CPU_FTRS_PA6T (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_CI_LARGE_PAGE | \ _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev