Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754607AbaKSE1O (ORCPT ); Tue, 18 Nov 2014 23:27:14 -0500 Received: from helcar.apana.org.au ([209.40.204.226]:38621 "EHLO helcar.apana.org.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754076AbaKSE1N (ORCPT ); Tue, 18 Nov 2014 23:27:13 -0500 Date: Wed, 19 Nov 2014 12:27:04 +0800 From: Herbert Xu To: Stephan Mueller Cc: Daniel Borkmann , quentin.gouchet@gmail.com, LKML , linux-crypto@vger.kernel.org, ABI/API Subject: Re: [PATCH v2 01/10] crypto: AF_ALG: add user space interface for AEAD Message-ID: <20141119042704.GA19258@gondor.apana.org.au> References: <5365136.g8vbXlhRyC@tachyon.chronox.de> <11608519.pS4L9VjM2n@tachyon.chronox.de> <20141118140631.GA12100@gondor.apana.org.au> <2398701.sGeMzIcHaz@tachyon.chronox.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2398701.sGeMzIcHaz@tachyon.chronox.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 19, 2014 at 05:20:42AM +0100, Stephan Mueller wrote: > > When looking deeper into skcipher_sendmsg, I see that the input data is copied > into the kernel using memcpy_fromiovec. The memory is allocated before the > memcpy call by skcipher_alloc_sgl. Zero-copy is done through sendpage. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/