linux-kernel - Re: [PATCH] Documentation/changes: Raise minimum supported binutils version to 2.23

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Message-ID: <20200324213606.GA3220053@rani.riverdale.lan>
Date:   Tue, 24 Mar 2020 17:36:07 -0400
From:   Arvind Sankar <nivedita@...m.mit.edu>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Arvind Sankar <nivedita@...m.mit.edu>,
        Kees Cook <keescook@...omium.org>,
        Borislav Petkov <bp@...en8.de>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, X86 ML <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Lendacky <Thomas.Lendacky@....com>,
        Mauro Rossi <issor.oruam@...il.com>,
        Michael Matz <matz@...e.de>
Subject: Re: [PATCH] Documentation/changes: Raise minimum supported binutils
 version to 2.23

On Wed, Mar 25, 2020 at 02:31:17AM +0900, Masahiro Yamada wrote:
> On Wed, Mar 25, 2020 at 12:38 AM Arvind Sankar <nivedita@...m.mit.edu> wrote:
> >
> > Which architecture? x86 at least doesn't even build with <= 2.22, but
> > adding workarounds for that shows _text as section-relative (T in nm
> > output).
> 
> 
> The reporter found this for PowerPC,
> but I think this could happen on any architecture.
> 
> https://patchwork.kernel.org/patch/11430243/
> 
> 

Ok, the powerpc linker script defines _text outside any output section,
so it is indeed the same issue as with _etext on x86.