linux-kernel - [PATCH 1/2] x86/chacha20: Avoid spurious jumps to other functions

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Date:   Fri, 25 Mar 2022 13:05:26 +0100
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, ebiggers@...gle.com,
        herbert@...dor.apana.org.au, Jason@...c4.com,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: [PATCH 1/2] x86/chacha20: Avoid spurious jumps to other functions

[ CC me I am not subscribed to LKML/linux-x86 mailing-lists ]

[ CC Nathan and Nick D. ]

Hi Peter,

Thanks for the patch it fixes a long standing build warning for me
with LLVM/Clang toolchain (here: v14.0.0).

Along with a workaround in [1] I am now "warning-free".

Just a note:
I guess crypto folk want a "***crypto:*** x86/chacha20: ..." in the
subject line.

Feel free to add my:

Tested-by: Sedat Dilek <sedat.dilek@...il.com> # LLVM/Clang v14.0.0 (x86-64)

Regards,
- Sedat -

[0] https://github.com/ClangBuiltLinux/linux/issues/1613
[1] https://github.com/ClangBuiltLinux/linux/issues/1613#issuecomment-1078663165