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Date:   Tue, 15 Dec 2020 09:48:27 +1030
From:   Alan Modra <>
To:     Nick Desaulniers <>
Cc:     Catalin Marinas <>,
        kernel-team <>,
        Will Deacon <>,
        LKML <>,
        Peter Smith <>,
        clang-built-linux <>,
        "# 3.4.x" <>,
        Linux ARM <>,
        Ard Biesheuvel <>,
        Fāng-ruì Sòng <>,
        Quentin Perret <>
Subject: Re: [PATCH] arm64: link with -z norelro regardless of

On Mon, Dec 14, 2020 at 01:44:06PM -0800, Nick Desaulniers wrote:
> aarch64-linux-gnu-ld: warning: -z norelro ignored
> So we set the emulation mode via -maarch64elf, and our preprocessed

The default linker emulation for an aarch64-linux ld.bfd is
-maarch64linux, the default for an aarch64-elf linker is
-maarch64elf.  They are not equivalent.  If you choose -maarch64elf
you get an emulation that doesn't support -z relro.

Now I don't know why the kernel uses -maarch64elf so you shouldn't
interpret my comment as a recommendation to use -maarch64linux
instead.  That may have other unwanted effects.

Alan Modra
Australia Development Lab, IBM

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