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 931ECC6FD1C for ; Thu, 23 Mar 2023 16:11:55 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pfNXS-00066B-Vq; Thu, 23 Mar 2023 12:11:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pfNXQ-00063i-M9 for qemu-devel@nongnu.org; Thu, 23 Mar 2023 12:11:40 -0400 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pfNXO-0005p0-Vw for qemu-devel@nongnu.org; Thu, 23 Mar 2023 12:11:40 -0400 Received: by mail-pl1-x631.google.com with SMTP id w4so14689596plg.9 for ; Thu, 23 Mar 2023 09:11:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1679587897; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=Gdk22G/eWWKEVeaS8iNIs2GKyLXFIpnS8/TmZ3FsAhY=; b=NCt3R3b1xke8oBWkEfv6GgsogaX/NoF5qMRVOyBvBlbF34TbnrTXareAejzqh5VBT7 c6qbc42ueK4l7Ilj/NBK8Sl7sv94arJTYdjvL7cRfvzKf8QZTOxBNM2fhs6X+JgckQ48 fKLMT+I3XN0qfs4HBBWVhgxxP/X+lM+7O7m8OOjiPO4vaf/gJiHHAZUTPRzUbgmqM3Jp kqhGfYjr6gSR7LUMUYs9HMoYjF99D5JRKsNJjS2X0A/lurlt9wkeaq2JhwnS2/3S4bbw 5+U/g4toK7CEaKAY+XP42mQrPF8MImqnLMinNPUYKK2JFVvYVofBmqalERoXQpBWGGz7 hd7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679587897; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Gdk22G/eWWKEVeaS8iNIs2GKyLXFIpnS8/TmZ3FsAhY=; b=J3E7o7WA41b+qBR04WAFnK3sR2xLXK5beSwoQC13E16UCe49yxCKYKqmbOBNYbOP/+ shW8JLnqLqdsqL8RXsfrdSFBOj8MdCJjCZxeSpbV6B1Uc9sbKQxr+lRt/qUfejYJsawL MK+J20THZtK3Vj3HEnyx3MFh1fCpjhECuIYO0hw9wD3FIRjex2DrAXNm/3gohsht6SwF mbNHN9PZhX6VhpODaT2NvnL+30EpOCRF3mEx2aBli8EuWOQn5jdAhYGqqs/FQz/uJEzZ 6pwv8xbyTy7pjYztonX/F119UHPCzuT5SsiE+VFgY4lzPyxV9+cAYfiaDykg5Qz9tZpg CuTg== X-Gm-Message-State: AO0yUKWKEbqp5upkPHoBhRvKVGohrVeCUTzVpKorwncMu5hYi/DJhEVj Q8pfVh3mT11+4wVmRAV6DItAbA== X-Google-Smtp-Source: AK7set+v+RFocpy+u/GHtc5iI86PY/SXz5h+3rMNcM+ylfFKn+SVm7LOS9eL2QCDdpEI3o1ExeReDg== X-Received: by 2002:a17:902:d512:b0:1a1:7bd7:cc06 with SMTP id b18-20020a170902d51200b001a17bd7cc06mr7884058plg.43.1679587897426; Thu, 23 Mar 2023 09:11:37 -0700 (PDT) Received: from ?IPV6:2602:ae:1544:6601:226e:47e1:b8cd:a957? ([2602:ae:1544:6601:226e:47e1:b8cd:a957]) by smtp.gmail.com with ESMTPSA id k7-20020a170902760700b001a1deff606fsm5944968pll.125.2023.03.23.09.11.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 23 Mar 2023 09:11:37 -0700 (PDT) Message-ID: <5e93efee-843c-74b4-0b36-fcf89d8d3463@linaro.org> Date: Thu, 23 Mar 2023 09:11:35 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH v3] target/riscv: reduce overhead of MSTATUS_SUM change Content-Language: en-US To: "Wu, Fei" Cc: Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , "open list:RISC-V TCG CPUs" , "open list:All patches CC here" References: <20230322121240.232303-1-fei2.wu@intel.com> <4c0c210b-7a9a-34a8-b0c2-e32f9328bf07@intel.com> From: Richard Henderson In-Reply-To: <4c0c210b-7a9a-34a8-b0c2-e32f9328bf07@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::631; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x631.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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 3/22/23 17:38, Wu, Fei wrote: > There is MSTATUS_MPRV and MSTATUS_MPP kind of thing, priv+sum is not > able to represent all of the status, probably we can just add an extra > 'priv' at the back of TB_FLAGS? Yes, I think that's required. r~