Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F252C282C3 for ; Thu, 24 Jan 2019 10:21:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 38448218A6 for ; Thu, 24 Jan 2019 10:21:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726041AbfAXKVF (ORCPT ); Thu, 24 Jan 2019 05:21:05 -0500 Received: from orcrist.hmeau.com ([104.223.48.154]:40466 "EHLO deadmen.hmeau.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726140AbfAXKVF (ORCPT ); Thu, 24 Jan 2019 05:21:05 -0500 Received: from gondobar.mordor.me.apana.org.au ([192.168.128.4] helo=gondobar) by deadmen.hmeau.com with esmtps (Exim 4.89 #2 (Debian)) id 1gmc85-0004Xp-7z; Thu, 24 Jan 2019 18:21:01 +0800 Received: from herbert by gondobar with local (Exim 4.89) (envelope-from ) id 1gmc82-0003jK-IS; Thu, 24 Jan 2019 18:20:58 +0800 Date: Thu, 24 Jan 2019 18:20:58 +0800 From: Herbert Xu To: Ard Biesheuvel Cc: Eric Biggers , "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" , Linux Kernel Mailing List , "Jason A . Donenfeld" Subject: Re: [RFC/RFT PATCH 00/15] crypto: improved skcipher, aead, and hash tests Message-ID: <20190124102058.sj5rvthiigovvhzp@gondor.apana.org.au> References: <20190123224926.250525-1-ebiggers@kernel.org> <20190124084818.GA650@sol.localdomain> <20190124092359.hvizqdi2ptjdsot7@gondor.apana.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Thu, Jan 24, 2019 at 11:16:23AM +0100, Ard Biesheuvel wrote: > > OK, so how many adjacent physical pages is a scatterlist entry > permitted to cover? Unbounded? Well the network stack is limited by packet size so it's less than 64K for practical purposes. However, the API itself doesn't specify a limit as such. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt