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 Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 39876C00140 for ; Mon, 15 Aug 2022 15:49:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 9E66840B42; Mon, 15 Aug 2022 15:49:41 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 9E66840B42 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tb6EgNiGpibu; Mon, 15 Aug 2022 15:49:40 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp2.osuosl.org (Postfix) with ESMTP id B78F940B2E; Mon, 15 Aug 2022 15:49:39 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org B78F940B2E Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by ash.osuosl.org (Postfix) with ESMTP id 622971BF3C9 for ; Mon, 15 Aug 2022 15:49:02 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 48B16417AE for ; Mon, 15 Aug 2022 15:49:02 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 48B16417AE X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GKKUimIxc4q3 for ; Mon, 15 Aug 2022 15:49:01 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 2766041775 Received: from smtpcmd13147.aruba.it (smtpcmd13147.aruba.it [62.149.156.147]) by smtp4.osuosl.org (Postfix) with ESMTP id 2766041775 for ; Mon, 15 Aug 2022 15:49:00 +0000 (UTC) Received: from localhost.localdomain ([151.34.232.41]) by Aruba Outgoing Smtp with ESMTPSA id NcKloknb6TCpUNcKpowBre; Mon, 15 Aug 2022 17:49:00 +0200 From: Giulio Benetti To: buildroot@buildroot.org Date: Mon, 15 Aug 2022 17:48:53 +0200 Message-Id: <20220815154854.17628-4-giulio.benetti@benettiengineering.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220815154854.17628-1-giulio.benetti@benettiengineering.com> References: <20220815154854.17628-1-giulio.benetti@benettiengineering.com> MIME-Version: 1.0 X-CMAE-Envelope: MS4xfMGw3Jv625cWcr9pGpONkqZ5DURCRaA6Rc7lmT8EIivZuDSrkNcnFaZfVMrCqgShqTtQ2Ms8rO5ILJMYLspZXIRbJJVlXErGkoyydjkJC1zXslbTB5Gj fBLRDgCFiDKohprN/l8qI8UNQRd9SPa/bmHatz1vHijsn4grOC5HbNpqFKwMZII7Alr0R4jAgVO76fwngScT6i29WhgU1x7LLspiBR2tEboNq8xns4oQMaij HxEJIUwVO27byjIMIij/xKYwZdtxw1dqrm1fXg7SbasLZQvX92fT07XnwDIinJy25QvpYg+aHYfT/oN7l800y0iUgS96ybCIA4D9GuoZ8xqfeoHupLgprtO4 abQHa4/yIdydfG2+qzHmTfB8IcmQl0AT3Vj4qfLA+NGy8k/0u+BbArv+GyTBgEXT0GlkhFXN/Rj1yiYxWbnwf1hGG19R9w== X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aruba.it; s=a1; t=1660578540; bh=6sPzAexxi/bRo+O+jXiSWdk6ALgT2IISztIe/IsYA7U=; h=From:To:Subject:Date:MIME-Version; b=L8dqcF1/uDGl/rddE7QI3msyKOX9E8JI5g5eGK+Az0Y+UCQhrTDrK6OBE+beP0jjV Xc9hU2HGxF7YgFKhwuP9tKZM/sb9sc+9ymNrk/erDPBZljyNh4LuvH0xjQNsshbNlv fIdquXIgDLuhVKg/5BnZH9nKMyelEWmV7pUmsDLYo5eXBMvHiKcZeHDFNjeO3uJSfR Gk40l87nsLJ6s59J2bh1GlbmJsYnTYSGfTs7NTWkR/pFXWz98WjMm3HUJ5ImpaNetc 0V5rbEPJGdZ15Ie3pe7dVAjprLlUg5ss9D4mK0/TIuguOmfanx4LexBFeMFtP0B70a 8Ec0vzh1cDlWQ== X-Mailman-Original-Authentication-Results: smtp4.osuosl.org; dkim=pass (2048-bit key) header.d=aruba.it header.i=@aruba.it header.a=rsa-sha256 header.s=a1 header.b=L8dqcF1/ Subject: [Buildroot] [PATCH 3/4] Revert "configs/olimex_a20_olinuxino_lime: use NEON+VFPv4 as FPU strategy" X-BeenThere: buildroot@buildroot.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion and development of buildroot List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Giulio Benetti , Luca Ceresoli , Jagan Teki , "Yann E . MORIN" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: buildroot-bounces@buildroot.org Sender: "buildroot" The gcc man page states that specifying Neon as part of the fpu setting has no effect, unless the -funsafe-math-optimizations is also specified, because Neon is not compliant with IEEE 754: ``` If the selected floating-point hardware includes the NEON extension (e.g. -mfpu=neon), note that floating-point operations are not generated by GCC's auto-vectorization pass unless -funsafe-math-optimizations is also specified. This is because NEON hardware does not fully implement the IEEE 754 standard for floating-point arithmetic (in particular denormal values are treated as zero), so the use of NEON instructions may lead to a loss of precision. ``` -funsafe-math-optimizations must be explictly specified per package to really use NEON as FPU, but it's something that is left to the user as well as setting BR2_ARM_FPU_NEON_VFPV4. This way the default BR2_ARM_FPU_VFPV4D16 is used as previously. So let's revert the offending patch. This reverts commit 115ee0521430d89db8be1a79457b0721ceafc484. Signed-off-by: Giulio Benetti --- configs/olimex_a20_olinuxino_lime_defconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/configs/olimex_a20_olinuxino_lime_defconfig b/configs/olimex_a20_olinuxino_lime_defconfig index b2364ca59a..ba814b98b8 100644 --- a/configs/olimex_a20_olinuxino_lime_defconfig +++ b/configs/olimex_a20_olinuxino_lime_defconfig @@ -2,7 +2,6 @@ BR2_arm=y BR2_cortex_a7=y BR2_ARM_EABIHF=y -BR2_ARM_FPU_NEON_VFPV4=y # Linux headers same as kernel, a 5.15 LTS series BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y -- 2.34.1 _______________________________________________ buildroot mailing list buildroot@buildroot.org https://lists.buildroot.org/mailman/listinfo/buildroot