[{"id":3676555,"web_url":"http://patchwork.ozlabs.org/comment/3676555/","msgid":"","list_archive_url":null,"date":"2026-04-13T08:31:32","subject":"Re: [PATCH for-11.1] linux-user/arm: Remove nwfpe","submitter":{"id":5111,"url":"http://patchwork.ozlabs.org/api/people/5111/","name":"Peter Maydell","email":"peter.maydell@linaro.org"},"content":"On Mon, 13 Apr 2026 at 08:33, Richard Henderson\n wrote:\n>\n> This emulation is present in the linux kernel only for\n> a very restricted set of configurations:\n>\n> config FPE_NWFPE\n> bool \"NWFPE math emulation\"\n> depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL\n>\n> EABI is the default for all armv6 capable kernels, so this\n> isn't enabled in practice for some time.\n>\n> GCC removed support for the FPA11 somewhere before gcc-5.\n>\n> The code within nwfpe is not thread-safe, using several\n> global variables.\n\nI agree that this is probably something we should drop, but I\nthink it needs to go through the deprecate-and-drop cycle first.\n\nWe probably just have time to mark it deprecated for 11.0\nif we're quick about the patch and we have something else\nthat needs to go into rc4.\n\nthanks\n-- PMM","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=hTYSd7CH;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvLHb0M9Tz1xtJ\n\tfor ; Mon, 13 Apr 2026 18:32:11 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wCChy-0007G6-Fv; Mon, 13 Apr 2026 04:31:50 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1wCChu-0007Em-H0\n for qemu-devel@nongnu.org; Mon, 13 Apr 2026 04:31:46 -0400","from mail-yx1-xb134.google.com ([2607:f8b0:4864:20::b134])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from )\n id 1wCCht-0005Cj-2F\n for qemu-devel@nongnu.org; Mon, 13 Apr 2026 04:31:46 -0400","by mail-yx1-xb134.google.com with SMTP id\n 956f58d0204a3-6501725d888so2990558d50.0\n for ; Mon, 13 Apr 2026 01:31:44 -0700 (PDT)"],"ARC-Seal":"i=1; a=rsa-sha256; t=1776069103; cv=none;\n d=google.com; s=arc-20240605;\n b=Z6hF+WB6xh6Fr5UOUEPIh6dN+4VnG47YW/U/ltQ7xTnHI19W/DRAQ8zIdB1KEDi8L5\n X7AImNz2OXaWE/R7Eci6mra9e2BpuMKZHEFEQtq/6v+ciRzF0QwFOtljeq4LncFbZuwn\n 7u9X45b2gQIC0oPpJ2jfS5NGa5fRVDKMzd6Pem0oUf/CCw1krAGOY5kmPU2029rHuaeW\n L88jvbDL3grOkvd5hm7A0JArusgJdVAq81bOFJXjZ/a4RGMBtgIGY++++pMF5WGUQ2zF\n yMPk7nsbpq9AmEVmAnN9Huag7Z+cklWqgd9YFUDoJV+Fylw8jlxjDnzczfzgUJ0eLfqo\n +tuw==","ARC-Message-Signature":"i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com;\n s=arc-20240605;\n h=cc:to:subject:message-id:date:from:in-reply-to:references\n :mime-version:dkim-signature;\n bh=klKksQP1r6P32ErEKkGG269qIBOlQlQS5DCB+6d/CNk=;\n fh=GI2e/SBiq4MTIPc9mHou6R6WJe3VvhdDMWKbaXflkfU=;\n b=Y3wurvNHe0FHUCBRbJDzVASi5eTY781441kkjOkECPJl9zOdYQHuC07UL2d8nVr8yD\n PtvpIioFFJ828AqJ/qwIOTWa7fVE4opYuNu+Zunf6KocAfrD8q5aom9SeDGQLISHijI6\n snqrQVPYogVLK5TzS3S7lM9qKLnbMI3oXe2gFs1nuDtRXZ6gWMujr8EQrxreVNCCC5j/\n tuqpttDiLF8cvWdxY6xrwz1G1EKM/rkcAn/lAO1xsvnAFiGd//ianPsC6eqGDgiKO+eP\n dbcatZ6g0lDNWZK4yLQCagQLqr4DL2rT6piqlv7m8+iLJzaA3BeSdcBcMAYAP7zCEF6a\n FsNQ==; darn=nongnu.org","ARC-Authentication-Results":"i=1; mx.google.com; arc=none","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=linaro.org; s=google; t=1776069103; x=1776673903; darn=nongnu.org;\n h=cc:to:subject:message-id:date:from:in-reply-to:references\n :mime-version:from:to:cc:subject:date:message-id:reply-to;\n bh=klKksQP1r6P32ErEKkGG269qIBOlQlQS5DCB+6d/CNk=;\n b=hTYSd7CHN+E60vfngOVXlrOv+3G7+aE2vZ3NMsiEnY8D9NOW33zvQPrp7p0WbDN7i2\n D4BaM1C0fym8yNIOp5wJFjyx67mcVmG+5NWCH7lx7bVrw1RbW/kvyB+wKsa53Uyd60mv\n jTZ6LaIPPd0WOIUob/v+QpBzcxmIMY/pDTwZU4JhoKrbrQwuJ7o1qsNRWm5zJOSz4O8h\n 3PcvVGFQQZU4229xw+hIxRRRdL8yXFnpXKILX16tlxga4sQaVCzWGzkBW+qjvyN6mUu+\n Qp5l2OUxdzWXLBF66rDzx7ADAB+mwVy5sEUwKK+8gTOTwP5YEyjlNudWPssiO5P8zkEW\n IBXA==","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1776069103; x=1776673903;\n h=cc:to:subject:message-id:date:from:in-reply-to:references\n :mime-version:x-gm-gg:x-gm-message-state:from:to:cc:subject:date\n :message-id:reply-to;\n bh=klKksQP1r6P32ErEKkGG269qIBOlQlQS5DCB+6d/CNk=;\n b=tKi5eUBqOXJpOt+zwmpr7feF2NdmY3HeEWxPUHw8e3S8GvoA/T8IfDSJUZqq9Ok48y\n a5Mq6ggWSiV2GFERjHfE3f0zb1Oeo2aP6Pk7MAGYj6ZM0EIF7w5IsoNbQe9BnmEh6SVG\n h44MzcaBs0vSebqJmHiaal8mSI/cYLjINHpERW5WVNhFJ+2AtLz+JEqgUKbCWBdnnuNB\n h+p0spjYiwDTsdRSN++QiDYRg2EEiwp26yUYzc7tiQc9s9Clj2fEdqpA/pYVeqoxOCX9\n QCFXh53r89d5VWGrV43CKxSY6mjikbEncI2FztHbYLZoeRJduxNRJ2Vwz29aPNjuNDBD\n RAAw==","X-Gm-Message-State":"AOJu0YyDUCkG33tLNpEwMMsOiaRxcFa8lcrAhP8VI9crXLD+n/SXNvqf\n hO5X57P114sET+MyxOZCvwaO56vGrDnq7kAmnCiEh09JoitqY34CJWFYRznEtsk1Frej4reIZJ9\n BSwi2sK7TfYiGWkWz/Ds+9w5kFpwkj3XBB2EpYWVWS/thpnVZ0xJ01nI=","X-Gm-Gg":"AeBDieuRw/inx/Yi42IIEU6kCNYbe4nO9ux5BEyOvmzUKsNlWy9XCOru8WGLOC3bKaX\n i405kGPOooede39qv24sol93onktDolA6HezBp1++PQSfoIroBPN3TWbQyuYJ7nj3p0cC1roh16\n kDPq2as3SUrMfo9uA3mNgqRfqMY3KBBcsTA4WrAwRt3zFELjFRgs/ibEalEah1wvj3SCM1sqLhS\n 3hlboHWzBzucBBVqT1jIAYjfK3IuGTQSrGfd2fJK5ftOv3FUivd33PhQKdiOA50w0drL/KbsFZE\n QxfqSFrxWTKYY+yjPtBIq96Sj3SLf1xjjCJDPpWghTlNqb5w1jHZlsJSOqbLvUxRwIs=","X-Received":"by 2002:a05:690e:12cc:b0:651:b64a:ea1c with SMTP id\n 956f58d0204a3-651b64af863mr5747671d50.50.1776069103446; Mon, 13 Apr 2026\n 01:31:43 -0700 (PDT)","MIME-Version":"1.0","References":"<20260413073215.29968-1-richard.henderson@linaro.org>","In-Reply-To":"<20260413073215.29968-1-richard.henderson@linaro.org>","From":"Peter Maydell ","Date":"Mon, 13 Apr 2026 09:31:32 +0100","X-Gm-Features":"AQROBzD3paqdwqxetlTieIMnyFteXZDhzB3xkn7PZ8Ua0c1AeOraCAxuJjWXWac","Message-ID":"\n ","Subject":"Re: [PATCH for-11.1] linux-user/arm: Remove nwfpe","To":"Richard Henderson ","Cc":"qemu-devel@nongnu.org","Content-Type":"text/plain; charset=\"UTF-8\"","Received-SPF":"pass client-ip=2607:f8b0:4864:20::b134;\n envelope-from=peter.maydell@linaro.org; helo=mail-yx1-xb134.google.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"}}]