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 C2BBB43BE5; Mon, 26 Feb 2024 08:38:31 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E7BA742DED; Mon, 26 Feb 2024 08:38:30 +0100 (CET) Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by mails.dpdk.org (Postfix) with ESMTP id 9FAA042DEC for ; Mon, 26 Feb 2024 08:38:28 +0100 (CET) Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41Q6jCJt007246; Sun, 25 Feb 2024 23:38:25 -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=fyQF7tPQuV4p46XQqMBeaqrodKqcFvtXYQE7471jkA4=; b=Frl hMW+iglBa7ORu8tLUeNE9l35+B0Z6hCLs+jXO+ZatwgjskVHa0UpsrEz5dEY50tg GIgnvTrvQJ5FYfChM9TeS7xWv1tObflwEh4K7GP8zrzTOvXH8NwFKnTGApIe6LmT dU89hAtfremUUr9wWSW0J8d3ikqc3No8pd9QWTw9YNqRkSNJI92yd353G2qglm0J GB/uUHJKS698gpF934PkqRelG1wHpyoWyEw1WkSOyKNZSjdKOh9eVefO8bVypIOm DQPoSBjlLXo/ctfTH3kmo90aKDKXRy399urBu3ZNb7kj5vworzvntYlDkZ7WxHPd /Eq51oEbZLhw0lyjRvg== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3wfepr4dth-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 25 Feb 2024 23:38:24 -0800 (PST) Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1258.12; Sun, 25 Feb 2024 23:38:24 -0800 Received: from DC5-EXCH05.marvell.com (10.69.176.209) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Sun, 25 Feb 2024 23:38:23 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Sun, 25 Feb 2024 23:38:23 -0800 Received: from MININT-80QBFE8.corp.innovium.com (MININT-80QBFE8.marvell.com [10.28.164.106]) by maili.marvell.com (Postfix) with ESMTP id 164863F706F; Sun, 25 Feb 2024 23:38:19 -0800 (PST) From: To: , , , , Ruifeng Wang , "Bruce Richardson" CC: , Pavan Nikhilesh Subject: [PATCH v6 2/3] config/arm: add support for fallback march Date: Mon, 26 Feb 2024 13:08:09 +0530 Message-ID: <20240226073810.19015-2-pbhagavatula@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240226073810.19015-1-pbhagavatula@marvell.com> References: <20240222124503.17043-1-pbhagavatula@marvell.com> <20240226073810.19015-1-pbhagavatula@marvell.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: dGR6ls5uSfbsXdJtAKqAmc63Ynf2tu6p X-Proofpoint-GUID: dGR6ls5uSfbsXdJtAKqAmc63Ynf2tu6p 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=2024-02-26_04,2024-02-23_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 236ad3702d..7f856709ef 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"'], @@ -741,6 +742,11 @@ 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