linux-kernel - Re: [PATCH 5/7] arm64: keep .altinstructions and .altinstr

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Message-ID: <20171130174834.GC90451@samitolvanen.mtv.corp.google.com>
Date:   Thu, 30 Nov 2017 09:48:34 -0800
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Nicholas Piggin <npiggin@...il.com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.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 mailing list <linux-kbuild@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Yury Norov <ynorov@...iumnetworks.com>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: Re: [PATCH 5/7] arm64: keep .altinstructions and
 .altinstr_replacement

On Thu, Nov 30, 2017 at 11:58:27AM +1000, Nicholas Piggin wrote:
> So yes please if it's not too much trouble, could you remove
> the "gold" name from the generic patch and put it at the front
> of the series with this arm64 patch.

Sure, I'll do this in v2.

> Possibly then you could also do a 3rd patch to allow arm64 to
> select it if it's working with gcc?

These patches only fix the issues I ran into with clang and gold
when testing on a single device.  I feel like more testing would
be needed before enabling this by default for arm64.

Sami