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Re: [PATCH] powerpc: Update AT_HWCAP2 bits
- From: "Tulio Magno Quites Machado Filho" <tuliom at linux dot vnet dot ibm dot com>
- To: "Carlos O'Donell" <carlos at redhat dot com>, libc-alpha at sourceware dot org
- Cc:
- Date: Fri, 17 Nov 2017 21:03:34 -0200
- Subject: Re: [PATCH] powerpc: Update AT_HWCAP2 bits
- Authentication-results: sourceware.org; auth=none
- References: <20171018191511.20685-1-tuliom@linux.vnet.ibm.com> <87po8gptff.fsf@linux.vnet.ibm.com> <f23f18e8-a6bb-153f-6b76-92f1a1d7153d@redhat.com>
Carlos O'Donell <carlos@redhat.com> writes:
> On 11/17/2017 12:00 PM, Tulio Magno Quites Machado Filho wrote:
>> Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> writes:
>>
>>> This patch will wait for the acceptance of the kernel patch [1] into
>>> Linus' tree.
>>
>> Kernel patch has been merged, so I'm merging the glibc patch too:
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b0e2cb020085efe202123162502e0b551e49a0e
>
> Note that while merging to Linus tree marks the point at which glibc will
> accept changes per:
> https://sourceware.org/glibc/wiki/Style_and_Conventions#Support_for_features_not_yet_in_the_mainstream_Linux_kernel.3F
>
> ... it is not a stable ABI until you see a Linux 4.15 with that constant
> released.
>
> Likewise the constant in glibc master is not stable until we release this
> glibc on February 1st 2018.
>
> So one should be careful that this constant is *close* to being frozen
> forever by the glibc release and cannot be changed in the kernel, even
> if you wanted to.
Ack.
--
Tulio Magno