From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 258EAA034F; Sun, 18 Jul 2021 03:08:10 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 9447641125; Sun, 18 Jul 2021 03:08:09 +0200 (CEST) Received: from mail-pf1-f171.google.com (mail-pf1-f171.google.com [209.85.210.171]) by mails.dpdk.org (Postfix) with ESMTP id 0FF5340683 for <dev@dpdk.org>; Sun, 18 Jul 2021 03:08:07 +0200 (CEST) Received: by mail-pf1-f171.google.com with SMTP id m83so12881115pfd.0 for <dev@dpdk.org>; Sat, 17 Jul 2021 18:08:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pVj0O/EH+yxHeomSJm1YqLVpeIRtJSAG0uZsugEYGho=; b=0KIlnZOYE5d4DBDyS0jV9O8GWRRSmYGeBMemPPK+LEd/ymVoGpVtxZIOoZcrCrNS+t 5a+m8wM7KuN5MlQ6kVnUeQcZ8w9nNjfokKBSjTzm+4A0J/CInsRFH/vv5Hac0ep29aZD W0XvpvJ/e1S9TQHgg2+aVY+pP/Sgh4HjByoBIT+BqMbFy5vWujEI1jN3xR+9l49Ye6gB N0ioUwwk3NZgsFekxW3j5qwvydoU0Hw6+keH56R2PYSli/Dfq5t6mUETTAOQaGZPNh4T sPvIRyCvT3pPraUcJjpD5b0mV/oU4r4E33KtKT6O/+0KCM/YhosoYX1bYXoz/2J8Ev/8 ARAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pVj0O/EH+yxHeomSJm1YqLVpeIRtJSAG0uZsugEYGho=; b=YaJnlLVHYYLNQf29JGWow4GMTTHP0CSRcce7y6oRkefShBoKp+GCor1w30mYXw1+7V NcPqqzX2WPLjUixA7VpMPvndiCV0fZ3JE/7F1J7fnuUa7MRqVQ5ASzrXuzMXIA8l1XUx eVI6zBOQVedWJ61p3icDXdM9ErbgiOdHNGDFfdFxdIK49+T1lUEskfYRpE5JgzPWbZ2Y o6SKGx0mjMojyzo5b80df7I8L7ztW+/eb4j7Kv8Fx/3ik+VX0Sal7OaLmHkRn+FQv4Jv a5wr3XT0TdDtbUjtUcZ9BAVdZzxwJbDf+wsxPuUpOqH2at4y02a182xhcyxeKO2sDexE fJ4g== X-Gm-Message-State: AOAM532IMWqayUs+0AQxxkSJ7MvNOc3yGHAsmgcJErEVyhUx2W6dJ4df RX8btlzdEVUFm1/9G8tiTdb2lA== X-Google-Smtp-Source: ABdhPJw40lBpFtTxk1xYTIcyUAhFV13jBdPEgHEru7FjIlHli6Hp4Jiljkh+9DeCrw1i/oPotga5gw== X-Received: by 2002:a63:5511:: with SMTP id j17mr17798714pgb.191.1626570487162; Sat, 17 Jul 2021 18:08:07 -0700 (PDT) Received: from hermes.local (204-195-33-123.wavecable.com. [204.195.33.123]) by smtp.gmail.com with ESMTPSA id z12sm11377597pjd.39.2021.07.17.18.08.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Jul 2021 18:08:06 -0700 (PDT) Date: Sat, 17 Jul 2021 18:08:04 -0700 From: Stephen Hemminger <stephen@networkplumber.org> To: Liang Ma <liangma@liangbit.com> Cc: dev@dpdk.org, yi.rong@intel.com, Liang Ma <liangma@bytedance.com>, stable@dpdk.org, Bruce Richardson <bruce.richardson@intel.com>, Konstantin Ananyev <konstantin.ananyev@intel.com> Message-ID: <20210717180804.301f7876@hermes.local> In-Reply-To: <20210717221304.GA45@DESKTOP-POQV63C.localdomain> References: <20210717170830.1736-1-liangma@liangbit.com> <20210717104849.2ec6526e@hermes.local> <20210717221304.GA45@DESKTOP-POQV63C.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH] buildtools: Check GCC version to avoid GCC 6.3.0 avx512 bug X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> On Sat, 17 Jul 2021 23:13:04 +0100 Liang Ma <liangma@liangbit.com> wrote: > On Sat, Jul 17, 2021 at 10:48:49AM -0700, Stephen Hemminger wrote: > > On Sat, 17 Jul 2021 18:08:30 +0100 > > Liang Ma <liangma@liangbit.com> wrote: > > > > > From: Liang Ma <liangma@bytedance.com> > > > > > > GCC 6.3.0 has a known bug which related to _mm512_extracti64x4_epi64. > > > Please reference https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82887 > > > > > > Some DPDK PMD avx512 version heavily use _mm512_extracti64x4_epi6, > > > which casue building failure with debug buildtype. > > > > > > Therefore, it's helpful to disable avx512 for GCC 6.3.0 > > > > > > Bugzilla ID: 717 > > > Fixes: e6a6a138919f (net/i40e: add AVX512 vector path) > > > Fixes: 808a17b3c1e6 (net/ice: add Rx AVX512 offload path) > > > Fixes: 4b64ccb328c9 (net/iavf: fix VLAN extraction in AVX512 path) > > > Cc: stable@dpdk.org > > > > > > Reported-by: Liang Ma <liangma@liangbit.com> > > > Signed-off-by: Liang Ma <liangma@bytedance.com> > > > > What distro still has GCC 6.3.0? > For example Debian 9.x Ok, thanks. Is there a bug fix in Debian LTS yet?