[PATCH 4/4] crypto: arm/crct10dif - port x86 SSE implementation to ARM

Herbert Xu herbert at gondor.apana.org.au
Mon Nov 28 05:17:48 PST 2016


On Thu, Nov 24, 2016 at 05:32:42PM +0000, Ard Biesheuvel wrote:
> On 24 November 2016 at 15:43, Ard Biesheuvel <ard.biesheuvel at linaro.org> wrote:
> > This is a straight transliteration of the Intel algorithm implemented
> > using SSE and PCLMULQDQ instructions that resides under in the file
> > arch/x86/crypto/crct10dif-pcl-asm_64.S.
> >
> > Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
> > ---
> >  arch/arm/crypto/Kconfig                        |   5 +
> >  arch/arm/crypto/Makefile                       |   2 +
> >  arch/{arm64 => arm}/crypto/crct10dif-ce-core.S | 457 +++++++++++---------
> >  arch/{arm64 => arm}/crypto/crct10dif-ce-glue.c |  23 +-
> >  4 files changed, 277 insertions(+), 210 deletions(-)
> >
> 
> This patch needs the following hunk folded in to avoid breaking the
> Thumb2 build:
> 
> """
> diff --git a/arch/arm/crypto/crct10dif-ce-core.S
> b/arch/arm/crypto/crct10dif-ce-core.S
> index 30168b0f8581..4fdbca94dd0c 100644
> --- a/arch/arm/crypto/crct10dif-ce-core.S
> +++ b/arch/arm/crypto/crct10dif-ce-core.S
> @@ -152,7 +152,8 @@ CPU_LE(     vrev64.8        q7, q7                  )
>         // XOR the initial_crc value
>         veor.8          q0, q0, q10
> 
> -       adrl            ip, rk3
> +ARM(   adrl            ip, rk3         )
> +THUMB( adr             ip, rk3         )
>         vld1.64         {q10}, [ip]     // xmm10 has rk3 and rk4
>                                         // type of pmull instruction
>                                         // will determine which constant to use
> """

I'm sorry but this patch doesn't apply on top of the other four.
So please resend the whole series.

Thanks,
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt



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