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Date:   Sat, 26 Feb 2022 02:27:53 +0100
From:   Miguel Ojeda <>
To:     Kees Cook <>
Cc:     Dan Li <>,
        Catalin Marinas <>,
        Will Deacon <>,
        Nathan Chancellor <>,
        Nick Desaulniers <>,
        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 Fri, Feb 25, 2022 at 9:59 PM Kees Cook <> wrote:
> I thought about that too, but I think it's less simple due to the
> __has_feature vs CONFIG differences, etc:
> But maybe __has_feature doesn't really matter here?

I have not tested it, but I was assuming the `CONFIG` could do its
job, since it comes from testing the compiler flag.

If the `__has_feature` is actually restricting it more than that, then
we should probably get the `CONFIG` fixed so that it only gets enabled
when really it is going to be used.


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