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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 33F6BC433F5 for ; Sun, 26 Dec 2021 03:49:28 +0000 (UTC) Received: from localhost ([::1]:42612 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n1KXG-0000xF-Ix for qemu-devel@archiver.kernel.org; Sat, 25 Dec 2021 22:49:26 -0500 Received: from eggs.gnu.org ([209.51.188.92]:51158) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n1KWJ-0000Aj-Nk for qemu-devel@nongnu.org; Sat, 25 Dec 2021 22:48:27 -0500 Received: from [2607:f8b0:4864:20::433] (port=39875 helo=mail-pf1-x433.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1n1KWI-0007AX-5q for qemu-devel@nongnu.org; Sat, 25 Dec 2021 22:48:27 -0500 Received: by mail-pf1-x433.google.com with SMTP id s15so10774063pfk.6 for ; Sat, 25 Dec 2021 19:48:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=5p1+El9ll2VSOgukMIqNAiiwkILUJLg8fOI9DP13lyA=; b=D56zIQ7JuOpjH0/egShB3kGELn7UyewI2qWTAg8PhTeAJRF0mS0+4jOaXA1AAl0jvp NH/r6Z10Nmw5rViISRC7oDkttK7uSY5XZFmgRyWkJa3IEOLj+Te7qm+w2CNTaz7QRTtj 7AiOR+LtWcqWqQosh2Jy+4wq9Co1OW9jIwBYeOVtiwjXUeB3WXprsseruDHph73RzXMH 5PtGUmVcwUbmJC4NQHLbIszXdqv/WfSyzdcMgIViHPcmhWFfWKjjc2lw205bSH8KKSwm 0+zpWj9V/zaF7HL2a+nuWlAZYRMUPEouiz9hjSFix1P2IZ+C6SA2L4JSeyBDpZE3/rSD Zsxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=5p1+El9ll2VSOgukMIqNAiiwkILUJLg8fOI9DP13lyA=; b=a1+YTGxYvntVKc9svX2TGvOML5sAtfGh42BcKLisv8TqZ57OkoUjp339HaLlwlT90V tALGNDenleu6LtHCE7vEiGEMM1hkOZb9lhzG2EGxbwGDnyOThnmT1m/44QiTFu/HHX5Q AnvO31bVArueUp8/9ssiCiXPlqXKC0FoxaoBVvI4lTGjfQk+2ab1kuWDlartghhhzq6y R6cdAyRb0ja6jHgdG1tCreCVGoHuHD4zODBa8R4+MruXZOTMeTRPK1rmANwC/2TDB4Qp zoggUrybyVZFiCqt/VgjU2SafB7V8Im0L+U4GCxj9rLwrCIISXKcyLgmthr8fz5MHDht R/WQ== X-Gm-Message-State: AOAM531H/LByU/uQJIWR+6H8OfUk+02otBtr/zs+wa2uDHjI3Atv8waR Nc+7MV5ZPTTI0XqQEfmMRbmTow== X-Google-Smtp-Source: ABdhPJwCM+93JcG52+gJGzpEFnMras4EoYcE1IJ/IEyahY6vke0glnRZgmVFzq98I9uE90CFhYMNew== X-Received: by 2002:a63:606:: with SMTP id 6mr11167481pgg.359.1640490504633; Sat, 25 Dec 2021 19:48:24 -0800 (PST) Received: from [172.20.100.20] ([156.19.246.20]) by smtp.gmail.com with ESMTPSA id s30sm6111461pfw.195.2021.12.25.19.48.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 25 Dec 2021 19:48:24 -0800 (PST) Subject: Re: [PATCH 2/6] target/riscv: add support for unique fpr read/write with support for zfinx To: liweiwei , palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, qemu-riscv@nongnu.org, qemu-devel@nongnu.org References: <20211224034915.17204-1-liweiwei@iscas.ac.cn> <20211224034915.17204-3-liweiwei@iscas.ac.cn> <2acd9ead-d9e8-46be-b306-2aa26ced06b5@iscas.ac.cn> <9ea3554f-367a-bd4e-fc4f-a98367b96260@iscas.ac.cn> From: Richard Henderson Message-ID: <3f56629e-890d-5b42-b4b6-e3b7592e1e96@linaro.org> Date: Sat, 25 Dec 2021 19:48:20 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: <9ea3554f-367a-bd4e-fc4f-a98367b96260@iscas.ac.cn> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::433 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::433; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x433.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.196, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wangjunqiang@iscas.ac.cn, lazyparser@gmail.com, ardxwe@gmail.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 12/25/21 5:42 PM, liweiwei wrote: > Sorry. In the old spec(version 0.41), nanboxing is not totally disabled, but "NaN-boxing > is limited to |XLEN| bits, not |FLEN| bits". Taking misa.mxl into acount, if misa.mxl is > RV32, and maximum is RV64, this should be sign-extended. Is there any other new update for > nanboxing  to the spec? Yes, in 1.0.0-rc, it's all gone. r~