linux-kernel - Re: [PATCH 10/15] arm64: disable ARM64_ERRATUM

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Message-ID: <20171109185457.GA137560@samitolvanen.mtv.corp.google.com>
Date:   Thu, 9 Nov 2017 10:54:57 -0800
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Greg Hackmann <ghackmann@...gle.com>
Subject: Re: [PATCH 10/15] arm64: disable ARM64_ERRATUM_843419 for clang LTO

On Fri, Nov 03, 2017 at 08:13:20PM +0000, Ard Biesheuvel wrote:
> I wonder it makes sense to disable such relocations entirely when we
> enable this erratum. If the toolchain does not generate them, they
> shouldn't occur in the first place, and having this dependency here
> seems awkward as well.

I agree. Unless someone objects, I'll replace this in v2 with a patch that
leaves the relocations in module.c even when the erratum is selected.

Sami