linux-kernel - Re: [PATCH v2 09/18] arm64: explicitly pass --no-fix-cortex-a53-843419 to GNU gold

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Message-ID: <20171121111506.qmlhtupzyrvfpgjl@lakrids.cambridge.arm.com>
Date:   Tue, 21 Nov 2017 11:15:06 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Sami Tolvanen <samitolvanen@...gle.com>
Cc:     Will Deacon <will.deacon@....com>,
        Alex Matveev <alxmtvv@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Greg Hackmann <ghackmann@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Yury Norov <ynorov@...iumnetworks.com>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: Re: [PATCH v2 09/18] arm64: explicitly pass
 --no-fix-cortex-a53-843419 to GNU gold

On Mon, Nov 20, 2017 at 12:35:49PM -0800, Sami Tolvanen wrote:
> On Mon, Nov 20, 2017 at 02:47:20PM +0000, Mark Rutland wrote:
> > However, we could instead check ld-version, produce a warning, and
> > abort the build in such cases.
> 
> I believe the version number of gold didn't change in binutils 2.28.1,
> where this was fixed, but we could certainly warn about older versions
> of gold.

If that's the case, can we mandate gold version > 2.28.1?

The latest version seems to be 2.29.1, so there's at least one
(hopefully) working release.

That might rule out a few working gold binaries, but it would save on
unwelcome surprises.

Thanks,
Mark.