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 smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 429B6C00140 for ; Mon, 15 Aug 2022 15:49:17 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id AD10A60FC7; Mon, 15 Aug 2022 15:49:16 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org AD10A60FC7 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BU3VY7OcWsd4; Mon, 15 Aug 2022 15:49:15 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp3.osuosl.org (Postfix) with ESMTP id D28A260FA8; Mon, 15 Aug 2022 15:49:14 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org D28A260FA8 Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by ash.osuosl.org (Postfix) with ESMTP id CCF121BF5A4 for ; Mon, 15 Aug 2022 15:49:00 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id A8599823C6 for ; Mon, 15 Aug 2022 15:49:00 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org A8599823C6 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2eONQFhoX_zI for ; Mon, 15 Aug 2022 15:49:00 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 89792819F3 Received: from smtpcmd13147.aruba.it (smtpcmd13147.aruba.it [62.149.156.147]) by smtp1.osuosl.org (Postfix) with ESMTP id 89792819F3 for ; Mon, 15 Aug 2022 15:48:59 +0000 (UTC) Received: from localhost.localdomain ([151.34.232.41]) by Aruba Outgoing Smtp with ESMTPSA id NcKloknb6TCpUNcKnowBqR; Mon, 15 Aug 2022 17:48:58 +0200 From: Giulio Benetti To: buildroot@buildroot.org Date: Mon, 15 Aug 2022 17:48:51 +0200 Message-Id: <20220815154854.17628-2-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: MS4xfHKbsiG7TgxQNk2vZYaqDXXOq64sAznnddelKJnd1jtocqmwWZwHjExOSMSLFPX1kl+uJVn0m8ev14td3Cm91ZYLFyoONkySoCFT8COJhLS5zZC84xN2 9vllT8xImZoCyHo9XpxNZEdXciNcFrNvBr3xlzTkVjvlvPwRCj0eQx9Oj1nm1FhvGjQoLbkjHrQLkf3o+Y++N7f9B5d/rnYnLL83wSTixcEJjQ2u3dWcS6Zc AWobOI+Y1s1GNnAi3zUsAMYv5aHAUBe80/CcDzOH4g7LHxN9cHo2qBP0dXWm9hhey6Q+55qz7FgsQmQPLe3sLxaxWXi34KtYA87AEpEVGxkedtxM2aoF5s4c 657DZFwo+yJOHpqXRs8RNVp3B+M+BwqxhdTbDcX/xmzz7htrYn2RTV/51klH6ZJxFKg5SCoOj+gbTPTzHlpGLM6+j61y6Q== X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aruba.it; s=a1; t=1660578538; bh=+XJSqw5gUPa+toIhUIRo/mkE6BYGfunJzR6lkCCInKg=; h=From:To:Subject:Date:MIME-Version; b=V0dBWw6KBAwKTEh7GZqgHwuGyTItqg/PAYCmqkxZmF/4QoK8mhfiLnylvvm5Elgtw JVsjUQoJDY97G4Xsfvz2V6N6N3cg6zTybrlm6oTuc/sZTS7HbAc1iig57/xUJd7vJm aqM+eYGpvqOPP+vBWLTYV9ryqFIC5l34dbnmNe/ParpLRUDTa+YIE1WXlDhTKGC/jE CdEsej3S6lL8sls3U+YXlICAoq+0w9ai0rs+CWPSt2cipyl0DYO8ll72+XRW6UTUDS CfMvavHTOqzeKDDwWb+afIqopfxzW+wkF22Gu3d8Y/8HVzn0TUNCRIyL0yMPQee2gw V78qjPziFfctw== X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dkim=pass (2048-bit key) header.d=aruba.it header.i=@aruba.it header.a=rsa-sha256 header.s=a1 header.b=V0dBWw6K Subject: [Buildroot] [PATCH 1/4] Revert "configs/olimex_a33_olinuxino: 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 23329364e206d5ca67a9eb9c733d3d556ccdbac4. Signed-off-by: Giulio Benetti --- configs/olimex_a33_olinuxino_defconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/configs/olimex_a33_olinuxino_defconfig b/configs/olimex_a33_olinuxino_defconfig index 27924b9e92..cdbc63efe1 100644 --- a/configs/olimex_a33_olinuxino_defconfig +++ b/configs/olimex_a33_olinuxino_defconfig @@ -1,7 +1,6 @@ # Architecture BR2_arm=y BR2_cortex_a7=y -BR2_ARM_FPU_NEON_VFPV4=y # Linux headers same as kernel, a 5.14 series BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_14=y -- 2.34.1 _______________________________________________ buildroot mailing list buildroot@buildroot.org https://lists.buildroot.org/mailman/listinfo/buildroot