Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C7CEC433F5 for ; Wed, 1 Dec 2021 00:18:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345656AbhLAAWG (ORCPT ); Tue, 30 Nov 2021 19:22:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237423AbhLAAWE (ORCPT ); Tue, 30 Nov 2021 19:22:04 -0500 Received: from mail-yb1-xb2a.google.com (mail-yb1-xb2a.google.com [IPv6:2607:f8b0:4864:20::b2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E6BCC061574 for ; Tue, 30 Nov 2021 16:18:44 -0800 (PST) Received: by mail-yb1-xb2a.google.com with SMTP id e136so57760831ybc.4 for ; Tue, 30 Nov 2021 16:18:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=G66SjSU43T2mv6UBUeBfbX+1AifLt/+MnLhSLyRgI78=; b=Ot/r3vv8w1E2ua1R8SR81W0XqSW7yzHEYzEcQa6qWlw41pimcaSm4utmpFjCj0RKuu IDgplljN0qIh82x/k6JDi2KyH5zgLiLQMwBUYQuYxPLWrUTwowwCp4DbqiIH/hRph0wT 1lbvVi/XlIAjNvvzPdS43DRIFj1XyKTPP8GwsWJOHlX+srI9IuyapalJPWErde3E9fkm pTYWnSeMqvF5DtzxBrvuWG+n9e0LmK2PJ4eFlb2t3JRlnWVR0usGxgFMkP6C41UhGyfk xQmnwfCKGjn89HMET90a5XPZMaMF3MavmfOFhHu5jUf2A9tTAn2nIFMmNmmru0r0+2bC zF1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=G66SjSU43T2mv6UBUeBfbX+1AifLt/+MnLhSLyRgI78=; b=WjOKJkVsc5eNj+j8uxkTiproval1+AnTg/CdFWXPogzHQ2GuTKuR/PkX3GrDSIIzWC Kb8DqK1qZn8BCwj3WZ9nLM0RzXUCG9hrHEHBUyksNTUcFQcl5UGxOKz7UT4JeHPZ/Oqj 8lun8e4fzxpG/tflgtpexWM6JC0gXryKJANg+X0Pc3SvGx4640kzzSeChZj+mmREbDYS j1SXJVzfSxbb6hDuF64Wg66HNG6P+T4vU6RGDbFJEUSZQWj3BDv75wbGGucPOfpZJ2LI KI9xAc2DkTaWR5xRUIq3zQTvS0ffgtcBsXVpqD+/OC8Dgem63YZNvEebHaFU8qdI2UR+ ZtTQ== X-Gm-Message-State: AOAM5305qy+gbkg8DSyAJw0uzqLZ5vKGlHDxQ3A23G/pwsCnIOnCt7Da C0y7U1k2uC2oQXkzgj3lx7mpBnUpyxGu13QIZ6y/YQ== X-Google-Smtp-Source: ABdhPJyD4KFiGReaovO1UDEL47qfWeKRfC6oWdRGfPoqOKKA64ZTZJ9no3Z2XY2kc5ZKwkrQ5PUPd9borBt4xVvGNc0= X-Received: by 2002:a05:6902:120e:: with SMTP id s14mr3325866ybu.277.1638317923319; Tue, 30 Nov 2021 16:18:43 -0800 (PST) MIME-Version: 1.0 References: <20211125141817.3541501-1-eric.dumazet@gmail.com> <6e94236d-7e91-80a6-f55d-15bd503e52c4@intel.com> In-Reply-To: <6e94236d-7e91-80a6-f55d-15bd503e52c4@intel.com> From: Eric Dumazet Date: Tue, 30 Nov 2021 16:18:31 -0800 Message-ID: Subject: Re: [PATCH] x86/csum: fix initial seed for odd buffers To: Dave Hansen Cc: Eric Dumazet , Peter Zijlstra , linux-kernel , Noah Goldstein , Alexander Duyck Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 30, 2021 at 2:16 PM Dave Hansen wrote: > > On 11/25/21 6:18 AM, Eric Dumazet wrote: > > From: Eric Dumazet > > > > When I folded do_csum() into csum_partial(), I missed that we > > had to swap odd/even bytes from @sum argument. > ... > > Fixes: df4554cebdaa ("x86/csum: Rewrite/optimize csum_partial()") > > Hi Eric, > > That Fixes: sha1 doesn't match anything that I can find. Should it be > Fixes: this commit: > > > https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/core&id=d31c3c683ee668ba5d87c0730610442fd672525f > > I'm happy to fix it up when I apply it. Just wanted to double-check > what you intended. II think you are right, the sha1 I gave was from my local tree, I forgot to rebase, sorry for the confusion. Thanks !