linux-kernel - Re: [PATCH v2 2/3] crypto: X25519 core functions for ppc64le

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Message-ID: <b1bec21d-9d60-491e-8808-ebb004b9c2fe@quicinc.com>
Date: Thu, 18 Jul 2024 17:28:35 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Danny Tsen <dtsen@...ux.ibm.com>, <linux-crypto@...r.kernel.org>
CC: <herbert@...dor.apana.org.au>, <leitao@...ian.org>, <nayna@...ux.ibm.com>,
        <appro@...ptogams.org>, <linux-kernel@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <mpe@...erman.id.au>,
        <ltcgcw@...ux.vnet.ibm.com>, <dtsen@...ibm.com>
Subject: Re: [PATCH v2 2/3] crypto: X25519 core functions for ppc64le

On 7/18/2024 5:25 PM, Jeff Johnson wrote:
> On 5/16/24 08:19, Danny Tsen wrote:
>> X25519 core functions to handle scalar multiplication for ppc64le.
>>
>> Signed-off-by: Danny Tsen <dtsen@...ux.ibm.com>
>> ---
>>   arch/powerpc/crypto/curve25519-ppc64le-core.c | 299 ++++++++++++++++++
>>   1 file changed, 299 insertions(+)
>>   create mode 100644 arch/powerpc/crypto/curve25519-ppc64le-core.c
> ...
> 
>> +MODULE_ALIAS_CRYPTO("curve25519");
>> +MODULE_ALIAS_CRYPTO("curve25519-ppc64le");
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_AUTHOR("Danny Tsen <dtsen@...ibm.com>");
> 
> Since commit 1fffe7a34c89 ("script: modpost: emit a warning when the
> description is missing"), a module without a MODULE_DESCRIPTION() will
> result in a warning with make W=1. I'm in the process of building 
> ppc64le with CRYPTO_CURVE25519_PPC64=m to validate my suspicion, but I 
> expect this to generate a warning.
> 
> Can you submit a follow-up patch that adds a MODULE_DESCRIPTION()?
> And since I'm trying to fix all of the existing issues in 6.11, Herbert 
> can you push this to Linus when it lands?

And my build did produce:
WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/crypto/curve25519-ppc64le.o