linux-kernel - Re: [PATCH 2/6] riscv: Add types to indirectly called assembly functions

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Message-ID: <202306301125.B58257BE4B@keescook>
Date:   Fri, 30 Jun 2023 11:25:12 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Sami Tolvanen <samitolvanen@...gle.com>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-riscv@...ts.infradead.org, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] riscv: Add types to indirectly called assembly
 functions

On Thu, Jun 29, 2023 at 11:42:47PM +0000, Sami Tolvanen wrote:
> With CONFIG_CFI_CLANG, assembly functions indirectly called
> from C code must be annotated with type identifiers to pass CFI
> checking. Use the SYM_TYPED_START macro to add types to the
> relevant functions.
> 
> Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook