Received: by 2002:a05:6358:1087:b0:cb:c9d3:cd90 with SMTP id j7csp1275200rwi; Wed, 26 Oct 2022 13:07:27 -0700 (PDT) X-Google-Smtp-Source: AMsMyM62ejeckQMZwqY76w5+pDEIiKTj4Avp4zYhxYTYVGgDdJBvEo8YSmggcnKpSbT1umWm4SSf X-Received: by 2002:a63:2f45:0:b0:457:dc63:68b4 with SMTP id v66-20020a632f45000000b00457dc6368b4mr38688528pgv.228.1666814847645; Wed, 26 Oct 2022 13:07:27 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666814847; cv=none; d=google.com; s=arc-20160816; b=M3+QGOY29sFJMrUGpjGw4HwG4RMpPgBY65qiR4FmM1P2MoznO1bVuQJ2KPAbzCmw9/ 92kL6rTRKYGByDb6K+1ha9iC4gZS8iqf4iOk3TlKkgMZcyb18OdHK0NT7OJ+W+19AsE3 4i45FQozYaUfYLKE8Yq2l3WmBP5M/HzVdpOTAR262aO14BU7Y1BkwV+pgdFmEJxx4H6J 6X0AjBRRdo55toTPAgqDVn/CY9qTbEyTLqJHUDSmqq2+ywFT0M+TLucRdGiTyLj0icXS 1GQTdo89kK7a1C2xSaS7q/O41x3x+D3e1j2eWz/UsTfEpdxiV3rgmSBG26In2cyqbTUI YjsQ== 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=CjOkVb9tqGmnQhKTbJbSJ9ptK+UDOxHEO2iEqJzNvD0=; b=Jl8zDfd4cwLeBdSPewrZoG9hhtBStGgxu1ruJ65KLd4cBb+VHN2R6BXyJsKXwnuOok sZqoY5QFUjLSqV/PkKTcIpvLgeRhCucWiDHpNTMCBCNr/9ul78ksDTDjTaHu7DKarDed z3otduvKoFHBAynvggPEjBJKaINz7xAYUnE951tVzKAJCx4n1qCIkm8Y8zXltd1JHzv4 RIbM+BxSuE6I4N1fK5/65cJgXpXCTiKqX9GD+BgWQdNyT+oAbVt/3yeCYtRPLwyPC2nO LbwBaQzafxL50KNGTF3nSlwQ2ta6StlCnleqjKqHd26l69lZ8rhJViVf4aPETSu1VrAB WZkg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f8-20020a637548000000b0046b3ba2c807si7224439pgn.143.2022.10.26.13.07.05; Wed, 26 Oct 2022 13:07:27 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234352AbiJZTwf (ORCPT + 99 others); Wed, 26 Oct 2022 15:52:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233721AbiJZTwd (ORCPT ); Wed, 26 Oct 2022 15:52:33 -0400 Received: from 1wt.eu (wtarreau.pck.nerim.net [62.212.114.60]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5E550F07F7; Wed, 26 Oct 2022 12:52:31 -0700 (PDT) Received: (from willy@localhost) by pcw.home.local (8.15.2/8.15.2/Submit) id 29QJqO0F024214; Wed, 26 Oct 2022 21:52:24 +0200 Date: Wed, 26 Oct 2022 21:52:24 +0200 From: Willy Tarreau To: Rasmus Villemoes Cc: "Paul E. McKenney" , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] selftests/nolibc: add 7 tests for memcmp() Message-ID: <20221026195224.GA24197@1wt.eu> References: <20221021060340.7515-1-w@1wt.eu> <20221021155645.GK5600@paulmck-ThinkPad-P17-Gen-1> <20221021170134.GB8420@1wt.eu> <20221021170738.GM5600@paulmck-ThinkPad-P17-Gen-1> <20221021172026.GC8420@1wt.eu> <20221021180040.GN5600@paulmck-ThinkPad-P17-Gen-1> <20221022112228.GB30596@1wt.eu> <20221024155357.GZ5600@paulmck-ThinkPad-P17-Gen-1> <20221026053922.GA19206@1wt.eu> 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) X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 26, 2022 at 11:08:41AM +0200, Rasmus Villemoes wrote: > On 26/10/2022 07.39, Willy Tarreau wrote: > > > > No more false positives nor false negatives anymore. I'm sending you > > the patch separately. > > While you're at it, may I suggest also adding a few test cases where the > buffers differ by 128, e.g. 0x0 v 0x80 and 0x40 v 0xc0. I initially thought about it but changed my mind for +/- 0xc0 that covered the same cases in my opinion. Do you have a particular error case in mind that would be caught by this one that the other one does not catch ? I'm fine for proposing a respin of the patch to improve it if it brings some value, but I'm still failing to figure when that would be the case. Thanks, Willy