linux-kernel - Re: [PATCH] crypto, x86: aesni: add compatibility with IAS

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Message-ID: <20200703044832.GD23200@gondor.apana.org.au>
Date:   Fri, 3 Jul 2020 14:48:32 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Jian Cai <caij2003@...il.com>
Cc:     jiancai@...gle.com, ndesaulniers@...gle.com, manojgupta@...gle.com,
        sedat.dilek@...il.com, maskray@...gle.com,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] crypto, x86: aesni: add compatibility with IAS

On Mon, Jun 22, 2020 at 04:24:33PM -0700, Jian Cai wrote:
> Clang's integrated assembler complains "invalid reassignment of
> non-absolute variable 'var_ddq_add'" while assembling
> arch/x86/crypto/aes_ctrby8_avx-x86_64.S. It was because var_ddq_add was
> reassigned with non-absolute values several times, which IAS did not
> support. We can avoid the reassignment by replacing the uses of
> var_ddq_add with its definitions accordingly to have compatilibility
> with IAS.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/1008
> Reported-by: Sedat Dilek <sedat.dilek@...il.com>
> Reported-by: Fangrui Song <maskray@...gle.com>
> Tested-by: Sedat Dilek <sedat.dilek@...il.com> # build+boot Linux v5.7.5; clang v11.0.0-git
> Signed-off-by: Jian Cai <caij2003@...il.com>
> ---
>  arch/x86/crypto/aes_ctrby8_avx-x86_64.S | 14 +++-----------
>  1 file changed, 3 insertions(+), 11 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt