From: Stephan Mueller <smueller@chronox.de>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
"H. Peter Anvin" <hpa@zytor.com>,
"David S.Miller" <davem@davemloft.net>,
Chandramouli Narayanan <mouli_7982@yahoo.com>,
Vinodh Gopal <vinodh.gopal@intel.com>,
James Guilford <james.guilford@intel.com>,
Wajdi Feghali <wajdi.k.feghali@intel.com>,
Jussi Kivilinna <jussi.kivilinna@iki.fi>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/5] crypto: AES CBC multi-buffer glue code
Date: Thu, 29 Oct 2015 03:03:54 +0100 [thread overview]
Message-ID: <2511888.9MT8h10EQL@tauon.atsec.com> (raw)
In-Reply-To: <1446067169.14635.7.camel@schen9-desk2.jf.intel.com>
Am Mittwoch, 28. Oktober 2015, 14:19:29 schrieb Tim Chen:
Hi Tim,
>+
>+ /* check for dependent cpu features */
>+ if (!cpu_has_aes) {
>+ pr_err("aes_cbc_mb_mod_init: no aes support\n");
>+ err = -ENODEV;
>+ goto err1;
>+ }
In your post 0/5, you say that this mechanism needs AVX2. In the existing
AESNI glue code I find
#ifdef CONFIG_X86_64
#ifdef CONFIG_AS_AVX2
if (boot_cpu_has(X86_FEATURE_AVX2)) {
...
Why would that CPU check not be needed here?
Ciao
Stephan
next prev parent reply other threads:[~2015-10-29 2:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1445565339.git.tim.c.chen@linux.intel.com>
2015-10-28 21:17 ` [PATCH 0/5] x86 AES-CBC encryption with AVX2 multi-buffer Tim Chen
2015-10-28 21:18 ` [PATCH 1/5] crypto: Multi-buffer encryptioin infrastructure support Tim Chen
2015-10-28 21:18 ` [PATCH 2/5] crypto: AES CBC multi-buffer data structures Tim Chen
2015-10-28 21:18 ` [PATCH 3/5] crypto: AES CBC multi-buffer scheduler Tim Chen
2015-10-28 21:19 ` [PATCH 4/5] crypto: AES CBC by8 encryption Tim Chen
2015-10-28 21:19 ` [PATCH 5/5] crypto: AES CBC multi-buffer glue code Tim Chen
2015-10-29 2:03 ` Stephan Mueller [this message]
2015-10-29 16:19 ` Tim Chen
2015-10-29 18:14 ` Tim Chen
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