[PATCH] powerpc: Fix dl-procinfo HWCAP

[Carlos Eduardo Seo]

Ping

Is this OK for 2.23?

Thanks

On 1/25/16 4:15 PM, Carlos Eduardo Seo wrote:
>
>
> On 1/25/16 4:04 PM, Adhemerval Zanella wrote:
>>
>> I think you should not it might be wrong for hwcap2, since the logic
>> is correct for hwcap1 (I assume this hitting the new fields for
>> POWER9).
>>
>
> No, this actually hits HWCAP1. If you look at hwcap.h, you will see:
>
> #define PPC_FEATURE_PSERIES_PERFMON_COMPAT  0x00000040
> #define PPC_FEATURE_TRUE_LE        0x00000002
>
> There's a 4 bit gap between PPC_FEATURE_PSERIES_PERFMON_COMPAT and
> PPC_FEATURE_TRUE_LE that has to be padded in _dl_powerpc_cap_flags.
>
> The patch also assumes HWCAP1 is 64-bit long and all bits are filled,
> which is true now (if you pad those vacant 4 bits).
>

-- 
Carlos Eduardo Seo
Software Engineer - Linux on Power Toolchain
cseo@linux.vnet.ibm.com