From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 421B4C3A5A7 for ; Wed, 4 Sep 2019 12:43:59 +0000 (UTC) Received: from dpdk.org (dpdk.org [92.243.14.124]) by mail.kernel.org (Postfix) with ESMTP id E983F21883 for ; Wed, 4 Sep 2019 12:43:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E983F21883 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=dpdk.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=dev-bounces@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 3CE541EC2D; Wed, 4 Sep 2019 14:43:58 +0200 (CEST) Received: from inbox.dpdk.org (xvm-172-178.dc0.ghst.net [95.142.172.178]) by dpdk.org (Postfix) with ESMTP id 43CDF3256 for ; Wed, 4 Sep 2019 14:43:56 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 2FE10A2E21; Wed, 4 Sep 2019 14:43:56 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Date: Wed, 04 Sep 2019 12:43:56 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: meson X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: i.maximets@samsung.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 Subject: [dpdk-dev] [Bug 344] Broken CPU feature discovery for armv8 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 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" https://bugs.dpdk.org/show_bug.cgi?id=3D344 Bug ID: 344 Summary: Broken CPU feature discovery for armv8 Product: DPDK Version: unspecified Hardware: ARM OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: meson Assignee: dev@dpdk.org Reporter: i.maximets@samsung.com Target Milestone: --- To check available cpuflags both build systems (make and meson) uses compil= er invocations with provided machine flags which is '-march=3Darmv8-a+crc'. It makes no much sense getting defines from the cc with non-native arch as it will have nothing common with real cpu features available. This leads to inability using dpdk on armv8 platform without crc support due to illegal instructions. '-march=3Dnative' is only available since GCC 8. Also, DPDK uses '-march=3Darmv8-a+crc' as a default armv8 machine regardless of fact that crc extension is optiona= l. Reported-at: https://mail.openvswitch.org/pipermail/ovs-dev/2019-September/362301.html --=20 You are receiving this mail because: You are the assignee for the bug.=