Re: [PATCH] X86-64: Add _dl_runtime_resolve_avx[512]_opt [BZ #20508]

[Florian Weimer <fweimer at redhat dot com>]

On 10/04/2016 05:34 PM, H.J. Lu wrote:
> On Tue, Oct 4, 2016 at 8:24 AM, Florian Weimer <fweimer@redhat.com> wrote:
> > On 10/04/2016 04:47 PM, H.J. Lu wrote:
> > > On Tue, Oct 4, 2016 at 3:52 AM, Florian Weimer <fweimer@redhat.com> wrote:
> > > > On 09/27/2016 07:35 PM, H.J. Lu wrote:
> > > >
> > > > > > Any comments? I will check it in next week if there is no objection.
> > > > >
> > > > >
> > > > >
> > > > > I'd like to backport it to 2.23 and 2.24 branches.  Any objections?
> > > >
> > > >
> > > >
> > > > Just this change, or the requirement for an AVX512F-capable assembler as
> > > > well?
> > >
> > > Good question.  This is also needed:
> > >
> > > commit f43cb35c9b3c35addc6dc0f1427caf51786ca1d2
> > > Author: H.J. Lu <hjl.tools@gmail.com>
> > > Date:   Fri Jul 1 05:54:43 2016 -0700
> > >
> > >     Require binutils 2.24 to build x86-64 glibc [BZ #20139]

> > That's not really backportable, I'm afraid.  Our users don't expect we break
> > builds in this way.
>
> Who are those users?

We don't know, really.  But moving forward the baseline binutils 
requirement in a stable release really contradicts what a stable release 
is about.

Florian