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Date:   Thu, 23 Jun 2022 10:17:19 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Qian Cai <quic_qiancai@...cinc.com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Ard Biesheuvel <ardb@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, linux-crypto@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64/crypto: Select AEAD2 for GHASH_ARM64_CE

On Wed, Jun 22, 2022 at 10:25:57AM -0400, Qian Cai wrote:
> Otherwise, we could fail to compile.
> 
> ld: arch/arm64/crypto/ghash-ce-glue.o: in function 'ghash_ce_mod_exit':
> ghash-ce-glue.c:(.exit.text+0x24): undefined reference to 'crypto_unregister_aead'
> ld: arch/arm64/crypto/ghash-ce-glue.o: in function 'ghash_ce_mod_init':
> ghash-ce-glue.c:(.init.text+0x34): undefined reference to 'crypto_register_aead'
> 
> Fixes: 37b6aab68fae ("crypto: arm64/ghash - drop PMULL based shash")

I don't see how the Fixes commit is related.  Hasn't this been a problem since
commit 537c1445ab0b, which added an AEAD algorithm to this module?

> diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig
> index 4391a463abd7..6b2ecc193bc0 100644
> --- a/arch/arm64/crypto/Kconfig
> +++ b/arch/arm64/crypto/Kconfig
> @@ -71,6 +71,7 @@ config CRYPTO_GHASH_ARM64_CE
>  	select CRYPTO_HASH
>  	select CRYPTO_GF128MUL
>  	select CRYPTO_LIB_AES
> +	select CRYPTO_AEAD2

I don't think CRYPTO_AEAD2 is meant to be selected directly.  It should be
CRYPTO_AEAD instead.

- Eric

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