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Re: [PATCH] powerpc: Update AT_HWCAP2 bits
- From: Carlos O'Donell <carlos at redhat dot com>
- To: Tulio Magno Quites Machado Filho <tuliom at linux dot vnet dot ibm dot com>, libc-alpha at sourceware dot org
- Date: Fri, 17 Nov 2017 15:00:33 -0800
- 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>
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.
--
Cheers,
Carlos.