linux-kernel - Re: [BISECT] ARM build errors on GCC v6.2 (crypto: arm/aes

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Date:   Sat, 14 Jan 2017 15:21:50 +0000
From:   Ard Biesheuvel <ard.biesheuvel@...aro.org>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "David S. Miller" <davem@...emloft.net>, linux-next@...r.kernel.org
Subject: Re: [BISECT] ARM build errors on GCC v6.2 (crypto: arm/aes - replace
 scalar AES cipher)

On 14 January 2017 at 14:24, Krzysztof Kozlowski <krzk@...nel.org> wrote:
> Hi,
>
> allyesconfig and multi_v7_defconfig fail to build on recent linux-next
> on GCC 6.2.0.
>
> Errors:
> ../arch/arm/crypto/aes-cipher-core.S: Assembler messages:
> ../arch/arm/crypto/aes-cipher-core.S:21: Error: selected processor does not support `tt .req ip' in ARM mode
> ../arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `movw tt,#:lower16:crypto_ft_tab'
> ../arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `movt tt,#:upper16:crypto_ft_tab'
>
> Compiler: arm-linux-gnueabi-gcc (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005
>
> Git bisect pointed to:
> first bad commit: [81edb42629758bacdf813dd5e4542ae26e3ad73a] crypto: arm/aes - replace scalar AES cipher
>

Fixed in

https://git.kernel.org/cgit/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=658fa754cd07

which should turn up in the next -next