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Message-ID: <202306211451.CB0A34563@keescook>
Date:   Wed, 21 Jun 2023 14:54:17 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Dan Li <ashimida.1990@...il.com>
Cc:     Qing Zhao <qing.zhao@...cle.com>, gcc-patches@....gnu.org,
        Richard Sandiford <richard.sandiford@....com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Tom Rix <trix@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Marco Elver <elver@...gle.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Song Liu <song@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Uros Bizjak <ubizjak@...il.com>,
        Kumar Kartikeya Dwivedi <memxor@...il.com>,
        Juergen Gross <jgross@...e.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Borislav Petkov <bp@...e.de>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Aaron Tomlin <atomlin@...hat.com>,
        Kalesh Singh <kaleshsingh@...gle.com>,
        Yuntao Wang <ytcoode@...il.com>,
        Changbin Du <changbin.du@...el.com>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, llvm@...ts.linux.dev,
        linux-hardening@...r.kernel.org
Subject: Re: [RFC/RFT,V2 0/3] Add compiler support for Kernel Control Flow
 Integrity

On Sat, Mar 25, 2023 at 01:11:14AM -0700, Dan Li wrote:
> This series of patches is mainly used to support the control flow
> integrity protection of the linux kernel [1], which is similar to
> -fsanitize=kcfi in clang 16.0 [2,3].
> 
> Any suggestion please let me know :).

Hi Dan,

It's been a couple months, and I didn't see any other feedback on this
proposal. I was curious what the status of this work is. Are you able to
attend GNU Cauldron[1] this year? I'd love to see this get some traction
in GCC.

Thanks!

-Kees

[1] https://gcc.gnu.org/wiki/cauldron2023

-- 
Kees Cook

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