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([2602:47:d490:6901:e72:57bd:c5e4:990c]) by smtp.gmail.com with ESMTPSA id bn10-20020a056a00324a00b00687a4b66697sm2698737pfb.16.2023.08.06.07.41.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 06 Aug 2023 07:41:36 -0700 (PDT) Message-ID: Date: Sun, 6 Aug 2023 07:41:34 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH 1/3] target/loongarch: Introduce loongarch32-softmmu target Content-Language: en-US To: Jiajie Chen , qemu-devel@nongnu.org Cc: Xiaojuan Yang , Song Gao , =?UTF-8?Q?Alex_Benn=c3=a9e?= , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , Eric Blake , Markus Armbruster , Eduardo Habkost , Marcel Apfelbaum , Yanan Wang , Paolo Bonzini References: <20230806141357.1756714-1-c@jia.je> From: Richard Henderson In-Reply-To: <20230806141357.1756714-1-c@jia.je> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x436.google.com X-Spam_score_int: -61 X-Spam_score: -6.2 X-Spam_bar: ------ X-Spam_report: (-6.2 / 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=-4.139, 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 8/6/23 07:13, Jiajie Chen wrote: > This commit introduces new loongarch32-softmmu target. Compared to > loongarch64-softmmu, the new target is different at least in: > > - GPRs and CSRs are 32-bits wide, but FPRs are still 64-bits wide > - LA32 lacks some 64-bit-only instructions > - CSR.DMW0-3 introduces PSEG Let us not create a new executable if we can avoid it. We can run 32-bit cpus from qemu-system-{x86_64,ppc64,aarch64}. In any case, the patch is much too large and must be split. r~