linux-kernel - Re: [PATCH 02/24] x86/traps: Move arch/x86/kernel/traps.c to arch/x86/entry/

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Message-ID: <36cf9869-4e4d-e0c6-bf71-981285bd8041@suse.cz>
Date:   Fri, 3 Sep 2021 09:36:00 +0200
From:   Martin Liška <mliska@...e.cz>
To:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Miguel Ojeda <ojeda@...nel.org>
Cc:     Lai Jiangshan <laijs@...ux.alibaba.com>,
        Joerg Roedel <jroedel@...e.de>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        linux-kernel@...r.kernel.org, Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Chester Lin <clin@...e.com>, Juergen Gross <jgross@...e.com>,
        andrew.cooper3@...rix.com, linux-toolchains@...r.kernel.org
Subject: Re: [PATCH 02/24] x86/traps: Move arch/x86/kernel/traps.c to
 arch/x86/entry/

On 9/2/21 19:05, Nick Desaulniers wrote:
> IIRC GCC only
> added the attribute recently in the 10.X release, so it might be too
> new to rely on quite yet.

The no_stack_protector attribute was actually added in the GCC 11.x release:
https://gcc.gnu.org/gcc-11/changes.html

Note the compiler is definitely used by Fedora, openSUSE Tumbleweed
and other cutting edge distributions.

Cheers,
Martin