From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oa1-x2b.google.com (mail-oa1-x2b.google.com [IPv6:2001:4860:4864:20::2b]) by sourceware.org (Postfix) with ESMTPS id 25AF13858016; Wed, 28 Sep 2022 19:09:56 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 25AF13858016 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-oa1-x2b.google.com with SMTP id 586e51a60fabf-1318106fe2cso7357358fac.13; Wed, 28 Sep 2022 12:09:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date; bh=hSG96vKjVQOqRuCXgEsGUcGYLNeTRsrIzVydLRGUTYY=; b=DgBPr+XNgHzubJz573hniJ1XrEChx0c5DKtVoznfcz4ZBYImRF4/9/4B42TgPDV+f5 03TQknHJTPArZutrYwHUXpe+4j+1ICPWvZIhHlZufHlEXl5XpnEpHJaUNmrT1C/K3Pk4 YVeN7l6vVkthhlJ3jon3k68X5LGNdPX9K3tyLamkpxyOD9t0fwoLXdPj8+sjLbK0VuPc 7FcUAicQelqZ6kddO5JUsgL5Ue5XFTykn78LRRjEm2O+zHjrJ9qgitnDwfVGUUM5C9ud XfUXN3ggBYaEinBourbP+yyWhzssnd/TI5mEeExqBF5F/+bfMpm1z8SJkg3tj2akZJHc q6hA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date; bh=hSG96vKjVQOqRuCXgEsGUcGYLNeTRsrIzVydLRGUTYY=; b=5pSXi+xUXxIwELGbRmAZYXIJcGSlhA6dK79LXF5FQ2RsPWeB64Bo5EG3Y/wwuy4uKp VAdB31EqVAvGfCy80TS1B2+w0efQWf3slMkyJSatpXudTo4drfP1N8rc/nwRg5lJoFGL 3ucX5fy8VwAs1cLvazBme96sH9z7UwRZaVq1Iua4gBPovSBHnkHGWAJhQsV57kaNyyf7 xZX6OJZUKN0a9joUXHB4zg9bOIsJJW0u9Vm4aU2Af4e1HKNM/s94KBYJDjcn7m53S8ro wJ2PnrJgSrrhbpPQgRIlKOFxq1xda5dKN9kaBdyLLV3ifeupEQk6u/8onu9prlTRGCzq tSAg== X-Gm-Message-State: ACrzQf2dLWq++P51s8HkYvkjI2I2QMY4grvHV9IJzQ68oLnLXa2Zi8br YTKxvtLHKeKcp8XP0SLLb5npo3zHunsOIi1u2qwSTAIDywo= X-Google-Smtp-Source: AMsMyM6U3uPxu0jOwHHPVN/Mdh5w32KT7UHGk3OA9fzlZ4d/BCZFl+F1xTU3/Ej5DxzCQd2j884wFvjakWr6sfxL9ys= X-Received: by 2002:a05:6871:820:b0:12d:95b0:47cc with SMTP id q32-20020a056871082000b0012d95b047ccmr6416281oap.154.1664392195208; Wed, 28 Sep 2022 12:09:55 -0700 (PDT) MIME-Version: 1.0 References: <20210419233607.916848-1-goldstein.w.n@gmail.com> <20210419233607.916848-2-goldstein.w.n@gmail.com> In-Reply-To: From: Sunil Pandey Date: Wed, 28 Sep 2022 12:09:19 -0700 Message-ID: Subject: Re: [PATCH v5 2/2] x86: Optimize strlen-avx2.S To: "H.J. Lu" Cc: Noah Goldstein , Libc-stable Mailing List , GNU C Library Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HK_RANDOM_ENVFROM,HK_RANDOM_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Wed, Sep 28, 2022 at 11:24 AM H.J. Lu wrote: > > On Wed, Sep 28, 2022 at 6:55 AM Sunil Pandey wrote: > > > > Attached patch fixes BZ# 29611. > > > > I would like to backport it to 2.32,2.31,2.30,2.29 and 2.29. Let me know > > if there is any objection. > > It doesn't fully fix BZ #29611. Like Noah mentioned, we need to add > BMI2 check to ifunc-impl-list.c for all functions which use "ifunc-avx2.h". > > > H.J. Pulling up corresponding patches are extremely difficult as they are not modular. I can modify existing patches (as posted on bug report) to incorporate ifunc-impl-list.c functionality. If it is OK? For backporting small incremental changes are preferred. Single monolithic patch makes backporting extremely difficult, if not impossible.