[PATCH] tunables: Add IFUNC selection and cache sizes

[H.J. Lu]

On Wed, Jun 21, 2017 at 7:35 AM, Siddhesh Poyarekar <siddhesh@gotplt.org> wrote:
> On Wednesday 21 June 2017 06:56 PM, H.J. Lu wrote:
>> I am testing this patch.  OK for master if there are no regressions?
>>
>
> Looks OK to me with one comment change which I missed the last time:
>
>>       Since all CPU/ARCH features are hardware optimizations without
>>       security implication, except for Prefer_MAP_32BIT_EXEC, which can
>> -     only be disabled, we check GLIBC_IFUNC for programs, including
>> +     only be disabled, we check glibc.tune.hwcaps for programs, including
>>       set*id ones.
>
> This block is no longer valid since the tunables are not read for setxid
> binaries.  If you want to make a case for hwcaps to be read in setxid
> binaries, then it should be made along with hwcap_mask since they're
> essentially the same feature for different machines.
>

Here is the updated patch.  OK for master?

-- 
H.J.
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