Return-Path: Received: from frisell.zx2c4.com ([192.95.5.64]:36635 "EHLO frisell.zx2c4.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388694AbeKTDKJ (ORCPT ); Mon, 19 Nov 2018 22:10:09 -0500 Received: by frisell.zx2c4.com (ZX2C4 Mail Server) with ESMTP id c65a04e3 for ; Mon, 19 Nov 2018 16:39:56 +0000 (UTC) Received: by frisell.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id fc91a10f (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256:NO) for ; Mon, 19 Nov 2018 16:39:56 +0000 (UTC) Received: by mail-ot1-f45.google.com with SMTP id a11so24580853otr.10 for ; Mon, 19 Nov 2018 08:45:56 -0800 (PST) MIME-Version: 1.0 References: <20181111093630.28107-1-martin@strongswan.org> <20181116022059.aob3ruc7umg32go6@gondor.apana.org.au> In-Reply-To: From: "Jason A. Donenfeld" Date: Mon, 19 Nov 2018 17:45:44 +0100 Message-ID: Subject: Re: [PATCH 0/6] crypto: x86/chacha20 - SIMD performance improvements To: Martin Willi Cc: Eric Biggers , Ard Biesheuvel , Linux Crypto Mailing List , X86 ML , Samuel Neves , Herbert Xu Content-Type: text/plain; charset="UTF-8" Sender: linux-crypto-owner@vger.kernel.org List-ID: Hi Martin, On Mon, Nov 19, 2018 at 8:52 AM Martin Willi wrote: > > Adding AVX-512VL support is relatively simple. I have a patchset mostly > ready that is more than competitive with the code from Zinc. I'll clean > that up and do more testing before posting it later this week. Terrific. Depending on how it turns out, it'll be nice to try integrating this into Zinc. I have a massive Xeon Gold 5120 machine that I can give you access to if you'd like to do some testing and benching. Poke me on IRC -- I'm zx2c4. > I don't think that having AVX-512F is that important until it is really > usable on CPUs in the market. Actually, similarly here, a 10nm Cannon Lake machine should be arriving at my house this week, which should make for some interesting testing ground for non-throttled zmm, if you'd like to play with it. Jason