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Date:   Tue, 1 Mar 2022 10:28:32 +0100
From:   Miguel Ojeda <>
To:     Nick Desaulniers <>
Cc:     Dan Li <>,
        Catalin Marinas <>,
        Will Deacon <>,
        Nathan Chancellor <>,
        Kees Cook <>,
        Masahiro Yamada <>,
        Thomas Gleixner <>,
        Andrew Morton <>,
        Mark Rutland <>,
        Sami Tolvanen <>,
        Nicholas Piggin <>,
        Guenter Roeck <>,
        Masami Hiramatsu <>,
        Miguel Ojeda <>,
        Luc Van Oostenryck <>,
        Marco Elver <>,
        linux-kernel <>,
        Linux ARM <>,,
Subject: Re: [PATCH] [PATCH v2] AARCH64: Add gcc Shadow Call Stack support

On Mon, Feb 28, 2022 at 11:35 PM Nick Desaulniers
<> wrote:
> Or simply add a #define for __noscs to include/linux/compiler-gcc.h
> with appropriate guard and leave the existing #ifndef in
> include/linux/compiler_types.h as is.  I'd prefer that when the
> compilers differ in terms of feature detection since it's as explicit
> as possible.

The idea is to avoid differing here to begin with, i.e. to use the
same code for both compilers (only whenever that is possible, of
course), thus having a single `#define` in a single file.

Do you think we will have to change in the future for some reason,
thus needing to split it again?


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