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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 7 Jan 2021 04:55:48 -0800
Message-ID: <CAMe9rOo4R1oT6Wz=D-_tihSjjqMK1RcmBfkZcDKE+gww+H_5oQ@mail.gmail.com>
Subject: Re: [PATCH 0/3] fix ifunc with static pie [BZ #27072]
To: "Carlos O'Donell" <carlos@redhat.com>
Cc: Szabolcs Nagy <szabolcs.nagy@arm.com>,
 GNU C Library <libc-alpha@sourceware.org>
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On Thu, Jan 7, 2021 at 4:50 AM Carlos O'Donell <carlos@redhat.com> wrote:
>
> On 1/7/21 7:48 AM, H.J. Lu via Libc-alpha wrote:
> > On Thu, Jan 7, 2021 at 3:01 AM Szabolcs Nagy via Libc-alpha
> > <libc-alpha@sourceware.org> wrote:
> >>
> >> on aarch64 this depends on a patch i posted earlier:
> >> https://sourceware.org/pipermail/libc-alpha/2021-January/121366.html
> >>
> >> with that aarch64 static pie tests pass.
> >>
> >> i'm still working on the tunables change and thinging about
> >> libc build time checks for reloc-free early startup code.
> >>
> >> i havent tested x86, it might need changes.
> >
> > Please fix the linker bug:
> >
> > https://sourceware.org/bugzilla/show_bug.cgi?id=13302
> >
> > first before changing glibc.
>
> You will still need potential changes in the loader to handle
> existing binaries, so the binutils fix need not come first,

Linker fix may impact how glibc should be changed.

> but it needs fixing.
>

Whatever we do in glibc,  please make it target dependent
and it should be NOP for x86.


-- 
H.J.