This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH] Add hwcap2 bits for POWER9
- From: "Carlos O'Donell" <carlos at redhat dot com>
- To: Tulio Magno Quites Machado Filho <tuliom at linux dot vnet dot ibm dot com>, Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- Cc: libc-alpha at sourceware dot org, linuxppc-dev at lists dot ozlabs dot org, Steve Munroe <munroesj at linux dot vnet dot ibm dot com>
- Date: Mon, 11 Jan 2016 10:21:05 -0500
- Subject: Re: [PATCH] Add hwcap2 bits for POWER9
- Authentication-results: sourceware.org; auth=none
- References: <568C272D dot 6000705 at linux dot vnet dot ibm dot com> <87egdsi4om dot fsf at totoro dot br dot ibm dot com> <1452267366 dot 5201 dot 12 dot camel at vnet dot ibm dot com> <568FE3D0 dot 7080008 at linaro dot org> <87wprgdu3u dot fsf at totoro dot br dot ibm dot com>
On 01/11/2016 10:16 AM, Tulio Magno Quites Machado Filho wrote:
> Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:
>
>> On 08-01-2016 13:36, Peter Bergner wrote:
>>> On Fri, 2016-01-08 at 11:25 -0200, Tulio Magno Quites Machado Filho wrote:
>>>> Peter, this solves the issue you reported previously [1].
>>>>
>>>> [1] https://sourceware.org/ml/libc-alpha/2015-12/msg00522.html
>>>
>>> Agreed, thanks. I'll also add the POWER9 support to the GCC side
>>> of the patch now that the glibc code is upstream.
>>
>> I do not see these bits being added in kernel side yet and GLIBC usual
>> only sync these kind of bits *after* they are included in kernel side.
>> So I would advise to either get these pieces (kernel support and hwcap
>> advertise) in kernel before 2.23 release, otherwise revert the patches.
>
> Ack.
> It has just been sent to the correspondent Linux mailing list:
> https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-January/137763.html
Please revert the changes from glibc until you checkin support to linux
kernel mainline.
Leaving these bits in increases the risk that someone uses to deploy a glibc
that then may have the wrong value.
Cheers,
Carlos.