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[212.78.193.212]) by smtp.gmail.com with ESMTPSA id u22-20020a170906409600b0099d9dee8108sm7679695ejj.149.2023.09.19.02.32.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 19 Sep 2023 02:32:32 -0700 (PDT) Message-ID: Date: Tue, 19 Sep 2023 11:32:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: target/sparc: What is CPU_FEATURE_FLOAT128 for? Content-Language: en-US To: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , Artyom Tarasenko , Mark Cave-Ayland Cc: QEMU Developers , Laurent Vivier References: <59e5fc47-cd15-f7b5-a0f7-c0620de33576@linaro.org> From: Richard Henderson In-Reply-To: <59e5fc47-cd15-f7b5-a0f7-c0620de33576@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::635; envelope-from=richard.henderson@linaro.org; helo=mail-ej1-x635.google.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 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=-1.473, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: 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 9/18/23 14:31, Philippe Mathieu-Daudé wrote: > Hi Mark, Artyom, > > I'm looking at the CPU_FEATURE_FLOAT128 definition introduced > in commit 64a88d5d3a ("CPU feature selection support"). Any > clue how it was supposed to be used? This should have a comment like /* * Qemu is emulating the linux kernel, which will * trap and emulate float128 instructions. */ r~