Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220222095736.24898-1-ashimida@linux.alibaba.com>
 <YhUMRoLDan7tJRiL@dev-arch.archlinux-ax161> <f44612ce-5bb1-da45-d6cb-39464898c4ff@roeck-us.net>
In-Reply-To: <f44612ce-5bb1-da45-d6cb-39464898c4ff@roeck-us.net>
From:   Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Date:   Tue, 22 Feb 2022 17:59:29 +0100
Message-ID: <CANiq72nhu+CtYYNfWLYxf19OscoEEZj=TATM0SHNU8ic1iDhyQ@mail.gmail.com>
Subject: Re: [PATCH] [PATCH] AARCH64: Add gcc Shadow Call Stack support
To:     Guenter Roeck <linux@roeck-us.net>
Cc:     Nathan Chancellor <nathan@kernel.org>,
        Dan Li <ashimida@linux.alibaba.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Kees Cook <keescook@chromium.org>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Sami Tolvanen <samitolvanen@google.com>,
        Nicholas Piggin <npiggin@gmail.com>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Miguel Ojeda <ojeda@kernel.org>,
        Luc Van Oostenryck <luc.vanoostenryck@gmail.com>,
        Marco Elver <elver@google.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        llvm@lists.linux.dev, linux-hardening@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Tue, Feb 22, 2022 at 5:48 PM Guenter Roeck <linux@roeck-us.net> wrote:
>
> The point here, I think, is to list the minimum gcc version.
> It is going to be a long time until gcc 12.0 is the minimum version,
> so I think it makes sense to list the minimum version number for
> each compiler here.

Yeah, please list the minimum version (ideally `>=` instead of `>`,
with the actual version where it first appeared). It makes it easy to
then remove things that are not needed anymore when the minimum GCC
version is upgraded.

Cheers,
Miguel