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Date:   Sat, 31 Oct 2020 11:30:20 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Nick Desaulniers <ndesaulniers@google.com>
Cc:     "# 3.4.x" <stable@vger.kernel.org>,
        Sasha Levin <sashal@kernel.org>,
        Nathan Chancellor <natechancellor@gmail.com>,
        Manoj Gupta <manojgupta@google.com>,
        Luis Lozano <llozano@google.com>,
        Arnd Bergmann <arnd@arndb.de>,
        clang-built-linux <clang-built-linux@googlegroups.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Jian Cai <jiancai@google.com>
Subject: Re: [PATCH] crypto: x86/crc32c - fix building with clang ias
Message-ID: <20201031103020.GA961225@kroah.com>
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On Fri, Oct 30, 2020 at 12:06:28PM -0700, Nick Desaulniers wrote:
> + stable
> 
> On Fri, Oct 30, 2020 at 12:04 PM Jian Cai <caij2003@gmail.com> wrote:
> >
> > From: Arnd Bergmann <arnd@arndb.de>
> >
> > commit 44623b2818f4 ("crypto: x86/crc32c - fix building with clang ias")
> > upstream
> >
> > The clang integrated assembler complains about movzxw:
> >
> > arch/x86/crypto/crc32c-pcl-intel-asm_64.S:173:2: error: invalid instruction mnemonic 'movzxw'
> >
> > It seems that movzwq is the mnemonic that it expects instead,
> > and this is what objdump prints when disassembling the file.
> >
> > Fixes: 6a8ce1ef3940 ("crypto: crc32c - Optimize CRC32C calculation with PCLMULQDQ instruction")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
> > Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
> > [jc: Fixed conflicts due to lack of 34fdce6981b969]

Nit, please spell out commit ids as the documentation asks you to.  I've
edited it and done that now...

thanks,

greg k-h