linux-kernel - Re: [PATCH 1/3] arm64: vdso32: drop the test for dmb ishld

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Message-ID: <CAPTJ0XEQn7W-2a3NPUZYt4Jr1nKCVVp2W-uKTfdiFEbiyuBQcQ@mail.gmail.com>
Date:   Wed, 13 Oct 2021 13:24:28 -0400
From:   Christian Biesinger <cbiesinger@...gle.com>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Simon Marchi <simon.marchi@...ymtl.ca>
Subject: Re: [PATCH 1/3] arm64: vdso32: drop the test for dmb ishld

Hi Nick,

On Tue, Oct 12, 2021 at 7:46 PM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> Binutils added support for this instruction in commit
> e797f7e0b2bedc9328d4a9a0ebc63ca7a2dbbebc which shipped in 2.34 (just
> missing the 2.33 release) but was cherry-picked into 2.33 in commit

Shouldn't that be 2.24 and 2.23, respectively?

> 27a50d6755bae906bc73b4ec1a8b448467f0bea1. Thanks to Christian and Simon
> for helping me with the patch archaeology.
>
> According to Documentation/process/changes.rst, the minimum supported
> version of binutils is 2.33. Since all supported versions of GAS support

(I have not checked whether this version is correct or not.)

Christian