From: Herbert Xu <herbert@gondor.apana.org.au>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: linux-crypto@vger.kernel.org, x86@kernel.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH] crypto/x86: Use XORL r32,32 in curve25519-x86_64.c
Date: Fri, 11 Sep 2020 16:56:09 +1000 [thread overview]
Message-ID: <20200911065608.GB32150@gondor.apana.org.au> (raw)
In-Reply-To: <20200827173058.94519-1-ubizjak@gmail.com>
On Thu, Aug 27, 2020 at 07:30:58PM +0200, Uros Bizjak wrote:
> x86_64 zero extends 32bit operations, so for 64bit operands,
> XORL r32,r32 is functionally equal to XORL r64,r64, but avoids
> a REX prefix byte when legacy registers are used.
>
> Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: "David S. Miller" <davem@davemloft.net>
> ---
> arch/x86/crypto/curve25519-x86_64.c | 68 ++++++++++++++---------------
> 1 file changed, 34 insertions(+), 34 deletions(-)
Patch applied. Thanks.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
prev parent reply other threads:[~2020-09-11 6:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-27 17:30 [PATCH] crypto/x86: Use XORL r32,32 in curve25519-x86_64.c Uros Bizjak
2020-09-01 15:39 ` Ard Biesheuvel
2020-09-01 18:13 ` Jason A. Donenfeld
2020-09-01 19:12 ` Jason A. Donenfeld
2020-09-02 5:50 ` Uros Bizjak
2020-09-02 9:17 ` peterz
2020-09-02 11:36 ` Uros Bizjak
2020-09-02 15:00 ` Jason A. Donenfeld
2020-09-02 14:58 ` Jason A. Donenfeld
2020-09-07 13:14 ` Jason A. Donenfeld
2020-09-11 6:56 ` Herbert Xu [this message]
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