Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp3217849pxu; Tue, 15 Dec 2020 01:21:32 -0800 (PST) X-Google-Smtp-Source: ABdhPJzL0QaPVjlcSFaWQiQuh/Sl7HagdLW0Q+Q6tcV/6AjMCGl5uA1oG1tfaJAlN9FJ2JEiRZtn X-Received: by 2002:a50:9e8b:: with SMTP id a11mr28142351edf.276.1608024092701; Tue, 15 Dec 2020 01:21:32 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1608024092; cv=none; d=google.com; s=arc-20160816; b=zs2VROdRi3p9w1T3eZCBOGz0tnIzfo765/XiD8YHlWiaLyPYta7s2/DnEHpj7GD3kL scPllQw/y05RNNhu8zKkeCPV846sNkUo1U3gcqoy9/xIw5EI+bDeOG+lX8W6hVQKYvqV YHsWkjzhmf1FtcFDuvWtLRkv/1Aju+wPJ4qw0WDIQrYap218nH/HeGMozfwUuQ2/ca6X XBBa/4qfy5CxMpDESIfsZ3lgE1nGnULMTuu2QDXn3O9m1mXB5/mM6VW00Vfrf1pazAyY RXBHR3+fdj7uBOXEC1/+HwoXPm4MmL49exUUpYCmGRpngk2AfSzBJug1XFnG/zpNZMqD K/rw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=e1ajYPJYUuQ2dM9EAqOxIb1mm6O+5sr+aUBRojR7ssU=; b=e+xHBXaPb80gKPjRObduF7gUs5qjFe1MNLpGPYGEaL0SFP3DLz977BHFNIKIrp52Cn pnxeSmhb+o30U8bVb4SuDlQdRLrvCEsKPba/3g5N0EQQxnAK1La66GwyhX4b6Nc5mn+f M5odlVjd2syvVnf0jyH5sLqSAXOghufX1IqsvPFS3PIwenbTV+EJojprVG3AwmbXvuyl w0SFmmgsL4RVgHEcwfdscGGlYR7ozB9MLFlLpHkZR6Z5nV9krS4H/xTurZOpQSISQGzx f8DiS8Z4nIntiz4atiZO4PlOaPQfU3vl3dR4gkiqGoxW6hDDg+nYelP8e5tNJnOBRpps JsrA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-crypto-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id jw12si579125ejb.176.2020.12.15.01.21.03; Tue, 15 Dec 2020 01:21:32 -0800 (PST) Received-SPF: pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-crypto-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727967AbgLOJT6 (ORCPT + 99 others); Tue, 15 Dec 2020 04:19:58 -0500 Received: from helcar.hmeau.com ([216.24.177.18]:50836 "EHLO fornost.hmeau.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727543AbgLOJTx (ORCPT ); Tue, 15 Dec 2020 04:19:53 -0500 Received: from gwarestrin.arnor.me.apana.org.au ([192.168.0.7]) by fornost.hmeau.com with smtp (Exim 4.92 #5 (Debian)) id 1kp6U2-0002Pr-Sk; Tue, 15 Dec 2020 20:19:04 +1100 Received: by gwarestrin.arnor.me.apana.org.au (sSMTP sendmail emulation); Tue, 15 Dec 2020 20:19:02 +1100 Date: Tue, 15 Dec 2020 20:19:02 +1100 From: Herbert Xu To: Ard Biesheuvel Cc: Ben Greear , Linux Crypto Mailing List , Eric Biggers Subject: Re: [PATCH v2] crypto: aesni - add ccm(aes) algorithm implementation Message-ID: <20201215091902.GA21455@gondor.apana.org.au> References: <20201201231158.GA32274@gondor.apana.org.au> <20201210024342.GA26428@gondor.apana.org.au> <20201210111427.GA28014@gondor.apana.org.au> <20201210121627.GB28441@gondor.apana.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Tue, Dec 15, 2020 at 09:55:37AM +0100, Ard Biesheuvel wrote: > > So the question is then how granular these kernel mode SIMD regions > need to be to avoid excessive latencies in softirq handling. Can you get some real world numbers on what the latency is like? Then we could take it to the scheduler folks and see if they're OK with it. Thanks, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt