From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id E2C27A0548; Sun, 18 Jul 2021 00:13:12 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 92EDE4067B; Sun, 18 Jul 2021 00:13:12 +0200 (CEST) Received: from sender11-of-o51.zoho.eu (sender11-of-o51.zoho.eu [31.186.226.237]) by mails.dpdk.org (Postfix) with ESMTP id 1E7054003C; Sun, 18 Jul 2021 00:13:11 +0200 (CEST) ARC-Seal: i=1; a=rsa-sha256; t=1626559987; cv=none; d=zohomail.eu; s=zohoarc; b=cOT/WYXV44HgQZCGQDhwGUxYH1rq7M0uZ3+jsNA5s2h6HdXWcXBFydjuONn7UCILpH+olkP32bs2qTNc964RdB51bolldDM4QJlmZNURjQv0Ws7xlnAHzdswagleo4KWJP4OV49uJuY2dg6oqWoHLmTDxPSRjalgLAJyUXY0l1E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.eu; s=zohoarc; t=1626559987; h=Content-Type:Cc:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=6njkgQyRKMjlIslLNU+lDMmkvg+YGur1G82ne3HHt6E=; b=aHo+Zy3a7/bZaGfPwIINMC84E/kmKnYMOTGB2ae5jBYGXuopQUc53E8D2jU2inShW2+aJFTITAlm6Ko0VxN2L/jnzLyu3ibpdZJUyPZ7/iQyVXi1hmOuIBTKZdmHkvNDfBiMmGrSNPiXT+h4Bp6yITAVJ6EwqGMmxR/XGOUZyhE= ARC-Authentication-Results: i=1; mx.zohomail.eu; spf=pass smtp.mailfrom=liangma@liangbit.com; dmarc=pass header.from= Received: from DESKTOP-POQV63C.localdomain (51.37.214.90 [51.37.214.90]) by mx.zoho.eu with SMTPS id 1626559987095364.04704447036306; Sun, 18 Jul 2021 00:13:07 +0200 (CEST) Date: Sat, 17 Jul 2021 23:13:04 +0100 From: Liang Ma To: Stephen Hemminger Cc: dev@dpdk.org, yi.rong@intel.com, Liang Ma , stable@dpdk.org, Bruce Richardson , Konstantin Ananyev Message-ID: <20210717221304.GA45@DESKTOP-POQV63C.localdomain> References: <20210717170830.1736-1-liangma@liangbit.com> <20210717104849.2ec6526e@hermes.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210717104849.2ec6526e@hermes.local> User-Agent: Mutt/1.9.4 (2018-02-28) X-ZohoMailClient: External 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Sat, Jul 17, 2021 at 10:48:49AM -0700, Stephen Hemminger wrote: > On Sat, 17 Jul 2021 18:08:30 +0100 > Liang Ma wrote: > > > From: Liang Ma > > > > 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 > > Signed-off-by: Liang Ma > > What distro still has GCC 6.3.0? For example Debian 9.x