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 024F943C5F; Wed, 6 Mar 2024 17:19:14 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E46A842E80; Wed, 6 Mar 2024 17:19:13 +0100 (CET) Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by mails.dpdk.org (Postfix) with ESMTP id 5CFE540276 for ; Wed, 6 Mar 2024 17:19:13 +0100 (CET) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 426GHxls003041; Wed, 6 Mar 2024 08:19:09 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type:content-transfer-encoding; s= pfpt0220; bh=dll/50JTpY6Iy2mE1dB0+W6q/X9i/zwYKOajLg5nda8=; b=QuZ m8ebBodXPXbc/u6o9oEItx/sizCtOln5grYxtCFoGKTiFptBomiumD+oOQPPtV66 6d5s6OHvhBByOEjU0wUM6N7tbaYFyDbuPO8izWO7jC6ZvR//j5TuOuzWrHW/qUtF tMO7tHlqrqaHvgTwpcWPvHYGZN23Frg9Uf/cK5tSEb5u/O/Xvu4mf0hChpBnJmOD g+bAquhK6r4bRWqKgtrAImFF+cPprTnFvNeCxKAS2TSedzPD7Rwdc5VWqr5WpxRp HakF+5Rvw4hqpFX3c6k0DDLoyGqajkAwhZwc5WOzeDjoY7jf1S1OucLufPDFIAF9 QNvFqdxjtAd/MPGK+9Q== Received: from dc6wp-exch02.marvell.com ([4.21.29.225]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3wp13s6cj4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Mar 2024 08:19:09 -0800 (PST) Received: from DC6WP-EXCH02.marvell.com (10.76.176.209) by DC6WP-EXCH02.marvell.com (10.76.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.12; Wed, 6 Mar 2024 08:19:08 -0800 Received: from maili.marvell.com (10.69.176.80) by DC6WP-EXCH02.marvell.com (10.76.176.209) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Wed, 6 Mar 2024 08:19:08 -0800 Received: from MININT-80QBFE8.corp.innovium.com (MININT-80QBFE8.marvell.com [10.28.164.106]) by maili.marvell.com (Postfix) with ESMTP id DAC1F3F7182; Wed, 6 Mar 2024 07:50:03 -0800 (PST) From: To: , , , , Ruifeng Wang , "Bruce Richardson" CC: , Pavan Nikhilesh Subject: [PATCH v7 2/3] config/arm: add support for fallback march Date: Wed, 6 Mar 2024 21:19:56 +0530 Message-ID: <20240306154957.750-2-pbhagavatula@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240306154957.750-1-pbhagavatula@marvell.com> References: <20240226073810.19015-1-pbhagavatula@marvell.com> <20240306154957.750-1-pbhagavatula@marvell.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: jqBXDhltNQ0r3Ts6Bwv_vwQUxJlx1zor X-Proofpoint-ORIG-GUID: jqBXDhltNQ0r3Ts6Bwv_vwQUxJlx1zor X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-06_10,2024-03-05_01,2023-05-22_02 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 From: Pavan Nikhilesh Some ARM CPUs have specific march requirements and are not compatible with the supported march list. Add fallback march in case the mcpu and the march advertised in the part_number_config are not supported by the compiler. Example mcpu = neoverse-n2 march = armv9-a fallback_march = armv8.5-a mcpu, march not supported machine_args = ['-march=armv8.5-a'] mcpu, march, fallback_march not supported least march supported = armv8-a machine_args = ['-march=armv8-a'] Signed-off-by: Pavan Nikhilesh Reviewed-by: Juraj Linkeš --- config/arm/meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/config/arm/meson.build b/config/arm/meson.build index 472a30f83a..73557bc169 100644 --- a/config/arm/meson.build +++ b/config/arm/meson.build @@ -94,6 +94,7 @@ part_number_config_arm = { '0xd49': { 'march': 'armv9-a', 'march_features': ['sve2'], + 'fallback_march': 'armv8.5-a', 'mcpu': 'neoverse-n2', 'flags': [ ['RTE_MACHINE', '"neoverse-n2"'], @@ -829,6 +830,11 @@ if update_flags break endif endforeach + if (part_number_config.has_key('fallback_march') and + candidate_march != part_number_config['march'] and + cc.has_argument('-march=' + part_number_config['fallback_march'])) + candidate_march = part_number_config['fallback_march'] + endif endif if candidate_march != part_number_config['march'] -- 2.25.1