linux-kernel - Re: [PATCH v11 06/13] crypto: aesni: add minimal build option for SGX LE

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Date:   Fri, 8 Jun 2018 10:27:37 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>, x86@...nel.org,
        platform-driver-x86@...r.kernel.org
Cc:     sean.j.christopherson@...el.com, nhorman@...hat.com,
        npmccallum@...hat.com, Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "open list:CRYPTO API" <linux-crypto@...r.kernel.org>,
        "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" 
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v11 06/13] crypto: aesni: add minimal build option for SGX
 LE

On 06/08/2018 10:09 AM, Jarkko Sakkinen wrote:
> --- a/arch/x86/crypto/aesni-intel_asm.S
> +++ b/arch/x86/crypto/aesni-intel_asm.S
> @@ -45,6 +45,8 @@
>  #define MOVADQ	movaps
>  #define MOVUDQ	movups
>  
> +#ifndef AESNI_INTEL_MINIMAL
> +
>  #ifdef __x86_64__
>  
>  # constants in mergeable sections, linker can reorder and merge
> @@ -133,6 +135,8 @@ ALL_F:      .octa 0xffffffffffffffffffffffffffffffff
>  #define keysize 2*15*16(%arg1)
>  #endif
>  
> +#endif /* AESNI_INTEL_MINIMAL */
> +

I'd really prefer that these get moved into a separate file rather than
a scattered set of #ifdefs.  This just seem fragile to me.

Can we have a "aesni-intel_asm-minimal.S"?  Or, at least bunch the
minimal set of things *together*?